Acta Physica Sinica - //m.suprmerch.com/ daily 15 2024-11-21 09:34:01 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-11-21 09:34:01 zh Copyright ©Acta Physica Sinica All Rights Reserved.  Address: PostCode:100190 Phone: 010-82649829,82649241,82649863 Email: apsoffice@iphy.ac.cn Copyright ©Acta Physica Sinica All Rights Reserved apsoffice@iphy.ac.cn 1000-3290 <![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.1

Inthispaper,theGibbs Appell (G A)equationsforvariablemassholonomicsystemswereestablished ,thenthedefinitionandcriterionoftheforminvarianceofG Aequationsundertheinfinitesimaltransformationsofgroupsweregiven .Next,acon servedquantitycanbededucedbyusingthisforminvarianceundercertainconditions,andanexamplewasgiven


Acta Physica Sinica. 2002 51(1): 1-5. Published 2005-04-11 ]]>

Inthispaper,theGibbs Appell (G A)equationsforvariablemassholonomicsystemswereestablished ,thenthedefinitionandcriterionoftheforminvarianceofG Aequationsundertheinfinitesimaltransformationsofgroupsweregiven .Next,acon servedquantitycanbededucedbyusingthisforminvarianceundercertainconditions,andanexamplewasgiven


Acta Physica Sinica. 2002 51(1): 1-5. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 1-5. article doi:10.7498/aps.51.1 10.7498/aps.51.1 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.1 1-5
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.6

Inthispaper,inafirst orderapproximation ,weobtaintheeffectsofperturbationsonastationarysolitonforTDGLE (timedependentginzburg landauequation) .Namely ,weobtainthesolitonparametervariationandthegeneralexpressionofthefirst or dercorrection .Atthesametime,wegivetheexactexpressionofaspecialexample


Acta Physica Sinica. 2002 51(1): 6-9. Published 2005-04-11 ]]>

Inthispaper,inafirst orderapproximation ,weobtaintheeffectsofperturbationsonastationarysolitonforTDGLE (timedependentginzburg landauequation) .Namely ,weobtainthesolitonparametervariationandthegeneralexpressionofthefirst or dercorrection .Atthesametime,wegivetheexactexpressionofaspecialexample


Acta Physica Sinica. 2002 51(1): 6-9. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 6-9. article doi:10.7498/aps.51.6 10.7498/aps.51.6 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.6 6-9
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.10

InthispapertheJacobiellipticfunctionexpansionmethodisextendedtothefiniteexpansionfortheappliedJacobicosineellipticfunctionorthethirdkindofJacobiellipticfunctiontoconstructthenewperiodicsolutionsofnonlinearwaveequations.Theperiodicsolutionsobtainedbythismethodcanbereducedtothesolitarywavesolutionsunderthelimitcondition.


Acta Physica Sinica. 2002 51(1): 10-14. Published 2005-04-11 ]]>

InthispapertheJacobiellipticfunctionexpansionmethodisextendedtothefiniteexpansionfortheappliedJacobicosineellipticfunctionorthethirdkindofJacobiellipticfunctiontoconstructthenewperiodicsolutionsofnonlinearwaveequations.Theperiodicsolutionsobtainedbythismethodcanbereducedtothesolitarywavesolutionsunderthelimitcondition.


Acta Physica Sinica. 2002 51(1): 10-14. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 10-14. article doi:10.7498/aps.51.10 10.7498/aps.51.10 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.10 10-14
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.15

Quantumerrorcorrectioncodingtechnologyisofgreatimportanceforquantumcommunicationaswellasquantumcomputa tion .Nearlyalloftheclassicalerrorcorrectioncodingschemeshave ,forthetimebeing,beentransplantedtothedomainofquantuminformation ;nevertheless,themostoutstandingschemeinclassicalcodingregion ,turbocode ,stilllacksthequantumanalo gytillnow .Wehavecompletedasimpleschemeofquantumrecursivesystematicconvolutionalcodebymeansofquantumregisternetwork .Atthesametime,akindofefficientquantuminterweaverisconstructedusingonlyquantumSWAPgates.AlsoaseriallyconcatenatedquantumTurbocodeisdevelopedbyanalogytotheclassicalTurbocode .Aslimitedbythequantumnon -cloningtheorem ,theproposedquantumturbocodeisseriallyconcatenated .Quantumturbocodemaynotonlyextendtheresearchareaofquantumerrorcorrectioncodingtechnology,butalsosolvethepuzzleinclassicalcodingtheory.


Acta Physica Sinica. 2002 51(1): 15-20. Published 2005-04-11 ]]>

Quantumerrorcorrectioncodingtechnologyisofgreatimportanceforquantumcommunicationaswellasquantumcomputa tion .Nearlyalloftheclassicalerrorcorrectioncodingschemeshave ,forthetimebeing,beentransplantedtothedomainofquantuminformation ;nevertheless,themostoutstandingschemeinclassicalcodingregion ,turbocode ,stilllacksthequantumanalo gytillnow .Wehavecompletedasimpleschemeofquantumrecursivesystematicconvolutionalcodebymeansofquantumregisternetwork .Atthesametime,akindofefficientquantuminterweaverisconstructedusingonlyquantumSWAPgates.AlsoaseriallyconcatenatedquantumTurbocodeisdevelopedbyanalogytotheclassicalTurbocode .Aslimitedbythequantumnon -cloningtheorem ,theproposedquantumturbocodeisseriallyconcatenated .Quantumturbocodemaynotonlyextendtheresearchareaofquantumerrorcorrectioncodingtechnology,butalsosolvethepuzzleinclassicalcodingtheory.


Acta Physica Sinica. 2002 51(1): 15-20. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 15-20. article doi:10.7498/aps.51.15 10.7498/aps.51.15 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.15 15-20
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.21

Byusingthemethodofquantumstatistics,wedirectlyderivethepartitionfunctionofthebosonicandermionicfieldonblackplaneandobtaintheintegralexpressionoftheblackplane’sentropy,whichavoidsthedifficultyinsolvingthewaveequationofvariousparticles.Thenviatheimprovedbrick -wallmethod,membranemodel,wecalculatetheblackplane’sentropyandfindoutthatifwelettheintegralupperandlowerlimitsbothtendtothehorizon ,theentropyoftheblackplaneisproportionaltotheareaofhorizon.Inourresult,thestrippedtermandthedivergentlogarithmictermintheoriginalbrick -wallmethodnolongerexist.Inthewholeprocess,wedonottakeanyapproximation .Weofferanewsimpleanddirectwayofcalculatingtheentropyofdifferentcomplicatedblackholes.


Acta Physica Sinica. 2002 51(1): 21-24. Published 2005-04-11 ]]>

Byusingthemethodofquantumstatistics,wedirectlyderivethepartitionfunctionofthebosonicandermionicfieldonblackplaneandobtaintheintegralexpressionoftheblackplane’sentropy,whichavoidsthedifficultyinsolvingthewaveequationofvariousparticles.Thenviatheimprovedbrick -wallmethod,membranemodel,wecalculatetheblackplane’sentropyandfindoutthatifwelettheintegralupperandlowerlimitsbothtendtothehorizon ,theentropyoftheblackplaneisproportionaltotheareaofhorizon.Inourresult,thestrippedtermandthedivergentlogarithmictermintheoriginalbrick -wallmethodnolongerexist.Inthewholeprocess,wedonottakeanyapproximation .Weofferanewsimpleanddirectwayofcalculatingtheentropyofdifferentcomplicatedblackholes.


Acta Physica Sinica. 2002 51(1): 21-24. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 21-24. article doi:10.7498/aps.51.21 10.7498/aps.51.21 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.21 21-24
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.25

Dynamicdescriptionisgivenofthephenomenaofdropletcondensation .Thechangeofthechemiclpolentialisdiscussedfortwotypesofliquiddroplets.TheconditionfortheBrownaggregationtooccurisalsoobtained .Combiningallthesewiththedropoffradius,theoptimalcomtactanglecanthenbedetermined.


Acta Physica Sinica. 2002 51(1): 25-30. Published 2005-04-11 ]]>

Dynamicdescriptionisgivenofthephenomenaofdropletcondensation .Thechangeofthechemiclpolentialisdiscussedfortwotypesofliquiddroplets.TheconditionfortheBrownaggregationtooccurisalsoobtained .Combiningallthesewiththedropoffradius,theoptimalcomtactanglecanthenbedetermined.


Acta Physica Sinica. 2002 51(1): 25-30. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 25-30. article doi:10.7498/aps.51.25 10.7498/aps.51.25 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.25 25-30
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.31

Usingthedistance dependenttight bindingmoleculardynamicsmodel(DDTB MD) ,theNa6 (2D) +Na8,Na6 (3D) +Na8collisiondynamicprocesseshavebeenstudiedfordifferentincidentenergiesanddifferentimpactparameters.Differentreactionmechanismshavebeenobserved ,suchasfusionreaction ,deepinelasticandquasi elasticcollisions,whicharesimilartothenuclearheavy ioncollisions.Thisshowsthattheclusterswithdifferentgeometricstructurescollidingwithidenticalclusterscanproducedifferentnewclusters.Atlowerincidentenergycentralcollisions,Na6 (3D)canformastablecluster;atleV nhalfcentralcollision ,Na6 (3D)iseasytoformalargercluster.


Acta Physica Sinica. 2002 51(1): 31-35. Published 2005-04-11 ]]>

Usingthedistance dependenttight bindingmoleculardynamicsmodel(DDTB MD) ,theNa6 (2D) +Na8,Na6 (3D) +Na8collisiondynamicprocesseshavebeenstudiedfordifferentincidentenergiesanddifferentimpactparameters.Differentreactionmechanismshavebeenobserved ,suchasfusionreaction ,deepinelasticandquasi elasticcollisions,whicharesimilartothenuclearheavy ioncollisions.Thisshowsthattheclusterswithdifferentgeometricstructurescollidingwithidenticalclusterscanproducedifferentnewclusters.Atlowerincidentenergycentralcollisions,Na6 (3D)canformastablecluster;atleV nhalfcentralcollision ,Na6 (3D)iseasytoformalargercluster.


Acta Physica Sinica. 2002 51(1): 31-35. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 31-35. article doi:10.7498/aps.51.31 10.7498/aps.51.31 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.31 31-35
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.36

WepresentanewQuasi Λ model four levelsystembasedonageneralthree levelΛ modelandinvestigatetheresonantfluorescencespectroscopyindetail.Therearethreeultra narrowspectrallinesinthespontaneousemissionspectrafromupperleveltolower lyinglevelsofthetwoemissionchannels,whichoccuroverawiderangeoftheparameters.Theappearanceofthethreeultra narrowspectrallinesiscloselyrelatedwithRabifrequencyofthetwocoherencedrivingfields;andthelargertheRabifrequency ,thenarrowerthelines.Theeffectoflinenarrowingdoesn’toccurwhenthereisonlyacoherencedrivingfield .Whiletheincoherenttransitionandthecollisionaldecaybetweentheenergylevelsdestroythefeatureofthespectralnarrowingwhichmaybeconsideredtobetheresultofthemulti channelquantuminterference.


Acta Physica Sinica. 2002 51(1): 36-41. Published 2005-04-11 ]]>

WepresentanewQuasi Λ model four levelsystembasedonageneralthree levelΛ modelandinvestigatetheresonantfluorescencespectroscopyindetail.Therearethreeultra narrowspectrallinesinthespontaneousemissionspectrafromupperleveltolower lyinglevelsofthetwoemissionchannels,whichoccuroverawiderangeoftheparameters.Theappearanceofthethreeultra narrowspectrallinesiscloselyrelatedwithRabifrequencyofthetwocoherencedrivingfields;andthelargertheRabifrequency ,thenarrowerthelines.Theeffectoflinenarrowingdoesn’toccurwhenthereisonlyacoherencedrivingfield .Whiletheincoherenttransitionandthecollisionaldecaybetweentheenergylevelsdestroythefeatureofthespectralnarrowingwhichmaybeconsideredtobetheresultofthemulti channelquantuminterference.


Acta Physica Sinica. 2002 51(1): 36-41. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 36-41. article doi:10.7498/aps.51.36 10.7498/aps.51.36 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.36 36-41
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.42

WehavecalculatedtheintensitydistributioninthefocalregionofalaserbeamwithasuperGaussianprofiletruncatedbyacircularaperture.Usingthecalculatedtheoreticalionizationvolumeversusthelaserintensity ,themultipleionizationyieldsofatomsproducedbythetruncatedlaserbeamisstudied .Asanexample,theyieldsofmultiplychargedionsofxenonarecalculat edforfocusedintensitiesintherangeof1 0 1 3 to 1 0 1 6 W cm2 .OscillationsandsuppressionsintheyieldcurvesbecomeobviouslywiththeincreaseofthetruncationsofasupperGaussianbeam .Foralargen,suchasn >2 ,orforstrongtruncations,suchasρa=1 ,ofthesupperGaussianbeam ,theshapeofmultipleionizationyieldsshowslessdependenceonn.Theseoscillationsandsuppressionsinthecalculatedyieldcurvesmaybeusedtoexplaintheexperimentalresultformultiplychargedionsofxenon.


Acta Physica Sinica. 2002 51(1): 42-48. Published 2005-04-11 ]]>

WehavecalculatedtheintensitydistributioninthefocalregionofalaserbeamwithasuperGaussianprofiletruncatedbyacircularaperture.Usingthecalculatedtheoreticalionizationvolumeversusthelaserintensity ,themultipleionizationyieldsofatomsproducedbythetruncatedlaserbeamisstudied .Asanexample,theyieldsofmultiplychargedionsofxenonarecalculat edforfocusedintensitiesintherangeof1 0 1 3 to 1 0 1 6 W cm2 .OscillationsandsuppressionsintheyieldcurvesbecomeobviouslywiththeincreaseofthetruncationsofasupperGaussianbeam .Foralargen,suchasn >2 ,orforstrongtruncations,suchasρa=1 ,ofthesupperGaussianbeam ,theshapeofmultipleionizationyieldsshowslessdependenceonn.Theseoscillationsandsuppressionsinthecalculatedyieldcurvesmaybeusedtoexplaintheexperimentalresultformultiplychargedionsofxenon.


Acta Physica Sinica. 2002 51(1): 42-48. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 42-48. article doi:10.7498/aps.51.42 10.7498/aps.51.42 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.42 42-48
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.49

Silvernanoparticleswithdifferentdiametersweresynthesizedbymicroemulsionmethod ,inwhichtheeffectoftolueneorcyclohexaneasanoilphaseontheparticlesizeanditsdistributionwasdetected .Silvernanoparticleswerenear spherical,bothmulticrystalsandtwinswereobserved.Latticedeformationsexistedindifferentdegreesbecausetheinterplanarspacedwasincreased.Thefluorescencespectrafordifferentsizesilvernanoparticlesdispersedinorganicsolventsweremeasured.Therearethreeemissionpeaksforsilvernanoparticles chloroformsystems,whilenofluorescenceemissionwasfoundwhensilvernanoparticlesdispersedintoluene .Thefluorescenceintensityvarieswithparticlesizeofthesilvernanoparticles,whichoriginatesfromAg2 ,Ag3 clustersonthesilverparticlesurfaceproducedbytheinteractionbetweensilverandchloroformunderUVradiation .Thereactivityandthenumberofsurfacereactivecentersvarywithsilverparticlesize,resultinginthedifferentfluorescencephenomena.


Acta Physica Sinica. 2002 51(1): 49-54. Published 2005-04-11 ]]>

Silvernanoparticleswithdifferentdiametersweresynthesizedbymicroemulsionmethod ,inwhichtheeffectoftolueneorcyclohexaneasanoilphaseontheparticlesizeanditsdistributionwasdetected .Silvernanoparticleswerenear spherical,bothmulticrystalsandtwinswereobserved.Latticedeformationsexistedindifferentdegreesbecausetheinterplanarspacedwasincreased.Thefluorescencespectrafordifferentsizesilvernanoparticlesdispersedinorganicsolventsweremeasured.Therearethreeemissionpeaksforsilvernanoparticles chloroformsystems,whilenofluorescenceemissionwasfoundwhensilvernanoparticlesdispersedintoluene .Thefluorescenceintensityvarieswithparticlesizeofthesilvernanoparticles,whichoriginatesfromAg2 ,Ag3 clustersonthesilverparticlesurfaceproducedbytheinteractionbetweensilverandchloroformunderUVradiation .Thereactivityandthenumberofsurfacereactivecentersvarywithsilverparticlesize,resultinginthedifferentfluorescencephenomena.


Acta Physica Sinica. 2002 51(1): 49-54. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 49-54. article doi:10.7498/aps.51.49 10.7498/aps.51.49 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.49 49-54
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.55

TheyieldsofH~-,H ,H_2 ,H_2~ +andH_3 ~+forH_3~ +clusterspassingthroughcarbonfoilshavebeenmeasured .TheresultsshowedthatthechargeexchangeprocessintheinteractionofH3 +ionswithsolidsplaysakeyroleintheformationoftheseproducts.TheclustereffectsandwakeeffectsofH3 +ionsinsolidsarealsodiscussedindetail.


Acta Physica Sinica. 2002 51(1): 55-62. Published 2005-04-11 ]]>

TheyieldsofH~-,H ,H_2 ,H_2~ +andH_3 ~+forH_3~ +clusterspassingthroughcarbonfoilshavebeenmeasured .TheresultsshowedthatthechargeexchangeprocessintheinteractionofH3 +ionswithsolidsplaysakeyroleintheformationoftheseproducts.TheclustereffectsandwakeeffectsofH3 +ionsinsolidsarealsodiscussedindetail.


Acta Physica Sinica. 2002 51(1): 55-62. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 55-62. article doi:10.7498/aps.51.55 10.7498/aps.51.55 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.55 55-62
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.63

Singleelectrondeviceshavebeenpreparedbythemolecularself assemblytechniqueandtheirvoltage currentcharacteristicsmeasured .Ontheotherhand,singleelectrondeviceswerestudiedbytheMonteCarlosimulationbasedonasemi classicaltheoryofsingleelectronphenomena.Thesimulatdvoltage currentcurveissimilartothemeasuredone.Thisshowsthattheabovemethodmaybeusedtostudysingleelectrondevices.Furthermore ,thesimulatdresultsindicatethatthevoltage currentcharacteristicofasingleelectrondeviceisdeterminedonlybythesmallquantityofnanoparticlesinthelowvoltageregionthoughtherearealargenumberofnanoparticlesbetweenthetwoelectrodes.


Acta Physica Sinica. 2002 51(1): 63-67. Published 2005-04-11 ]]>

Singleelectrondeviceshavebeenpreparedbythemolecularself assemblytechniqueandtheirvoltage currentcharacteristicsmeasured .Ontheotherhand,singleelectrondeviceswerestudiedbytheMonteCarlosimulationbasedonasemi classicaltheoryofsingleelectronphenomena.Thesimulatdvoltage currentcurveissimilartothemeasuredone.Thisshowsthattheabovemethodmaybeusedtostudysingleelectrondevices.Furthermore ,thesimulatdresultsindicatethatthevoltage currentcharacteristicofasingleelectrondeviceisdeterminedonlybythesmallquantityofnanoparticlesinthelowvoltageregionthoughtherearealargenumberofnanoparticlesbetweenthetwoelectrodes.


Acta Physica Sinica. 2002 51(1): 63-67. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 63-67. article doi:10.7498/aps.51.63 10.7498/aps.51.63 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.63 63-67
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.68

Guided moderesonanceinadielectricgratingresultsfromaredistributionofenergyinpropagatingwaveswhenhigh orderspatialharmonicsarecoupledtotheleakywave guidemodessustainedbythegrating.Inthispaper,wehaveanalyzedtheguided wavemodesinawaveguidewitharigorouscoupled waveapproach .Fromtheanalyzedresults,wehaveestimatedproperlythelocationoftheguided moderesonanceinaweaklymodulateddielectricgrating .Wealsodiscussedtherelationsamongtheguided moderesonance,gratinglayerthickness,substratethickness,andtheincidentangle.Byadoptingadesignforanti refection ,thesymmetricguided moderesonancewithlowsidebandwasachieved .


Acta Physica Sinica. 2002 51(1): 68-73. Published 2005-04-11 ]]>

Guided moderesonanceinadielectricgratingresultsfromaredistributionofenergyinpropagatingwaveswhenhigh orderspatialharmonicsarecoupledtotheleakywave guidemodessustainedbythegrating.Inthispaper,wehaveanalyzedtheguided wavemodesinawaveguidewitharigorouscoupled waveapproach .Fromtheanalyzedresults,wehaveestimatedproperlythelocationoftheguided moderesonanceinaweaklymodulateddielectricgrating .Wealsodiscussedtherelationsamongtheguided moderesonance,gratinglayerthickness,substratethickness,andtheincidentangle.Byadoptingadesignforanti refection ,thesymmetricguided moderesonancewithlowsidebandwasachieved .


Acta Physica Sinica. 2002 51(1): 68-73. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 68-73. article doi:10.7498/aps.51.68 10.7498/aps.51.68 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.68 68-73
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.74

TheMuellermatrixsolutionofthevectorradiativetransferequationwithtimedependenceisderivedinthispaper.Itisappliedtothesimulationofpolarimetricbistaticscatteringfromalayerofrandomnon sphericalscatterersnonuniformlyorientedwhenaGaussianplanepulseisincidentuponit.Co polarizedandcrosspolarizedbistaticscatteringarenumericallycalculated .Thepulseechoesarecomparedwiththeincidentpulse.Wedemonstratethefunctionaldependenceofthepulseonthephysicalparametersofarandommedium ,suchasspatialorientationandfractionalvolumeofscatterers,incidenceangleandpolarization ,thelayerdepthetc.


Acta Physica Sinica. 2002 51(1): 74-83. Published 2005-04-11 ]]>

TheMuellermatrixsolutionofthevectorradiativetransferequationwithtimedependenceisderivedinthispaper.Itisappliedtothesimulationofpolarimetricbistaticscatteringfromalayerofrandomnon sphericalscatterersnonuniformlyorientedwhenaGaussianplanepulseisincidentuponit.Co polarizedandcrosspolarizedbistaticscatteringarenumericallycalculated .Thepulseechoesarecomparedwiththeincidentpulse.Wedemonstratethefunctionaldependenceofthepulseonthephysicalparametersofarandommedium ,suchasspatialorientationandfractionalvolumeofscatterers,incidenceangleandpolarization ,thelayerdepthetc.


Acta Physica Sinica. 2002 51(1): 74-83. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 74-83. article doi:10.7498/aps.51.74 10.7498/aps.51.74 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.74 74-83
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.84

Inthispaper,thesqueezingeffectsofalightfieldintheT CmodelisstudiedbymeansofthequantumtheoryintheCounter Rotating Wave Approximation (C RWA) .Ithasbeenshownthat:thelittleindentationwhichrepresentsthequantumnoiseofthesystemappearsintheevolutioncurvesofQundertheC RWA ;thequantumnoisewhichiscausedbyvirtualphotonfieldgraduallybecomesweakwhenωincreases;thequantumnoiseincreaseswhen nincreases;thevirtualphotonprocesscanstrengthenthesqueezingeffectobviously .Besides,thedependenceoftheatom fieldcouplingconstantλandtheatom atomcouplingconstantgonthesqueezingeffectsofthefieldisobservedinourresults.


Acta Physica Sinica. 2002 51(1): 84-90. Published 2005-04-11 ]]>

Inthispaper,thesqueezingeffectsofalightfieldintheT CmodelisstudiedbymeansofthequantumtheoryintheCounter Rotating Wave Approximation (C RWA) .Ithasbeenshownthat:thelittleindentationwhichrepresentsthequantumnoiseofthesystemappearsintheevolutioncurvesofQundertheC RWA ;thequantumnoisewhichiscausedbyvirtualphotonfieldgraduallybecomesweakwhenωincreases;thequantumnoiseincreaseswhen nincreases;thevirtualphotonprocesscanstrengthenthesqueezingeffectobviously .Besides,thedependenceoftheatom fieldcouplingconstantλandtheatom atomcouplingconstantgonthesqueezingeffectsofthefieldisobservedinourresults.


Acta Physica Sinica. 2002 51(1): 84-90. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 84-90. article doi:10.7498/aps.51.84 10.7498/aps.51.84 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.84 84-90
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.91

Thecharacterizationofall opticalwavelengthconverterbasedonthecascadedsecond ordernonlinearitiesinLiNbO3waveguideshasbeencarriedoutinthisworkinordertofindrulestooptimizethefabricationparametersforstableandhigh efficiencyall opticalwavelengthconvention.Firstly,thecomparisonofnumericalanalysisresultsandthesmall signalanalysisresultsisgivenbasedonthecoupledmodeequation.Secondly,usingthenumericalresults,thedependenceofthefundamentalwavelengthandtheQPMgratingperiodonthebulktemperatureisgivenrespectively.Finally ,therelationshipbetweentheoutputpowerofaconvertedlightandthe 3dBbandwidthoffundamentalwavelength ,bulktemperature ,gratingperiodisanalyzed .


Acta Physica Sinica. 2002 51(1): 91-98. Published 2005-04-11 ]]>

Thecharacterizationofall opticalwavelengthconverterbasedonthecascadedsecond ordernonlinearitiesinLiNbO3waveguideshasbeencarriedoutinthisworkinordertofindrulestooptimizethefabricationparametersforstableandhigh efficiencyall opticalwavelengthconvention.Firstly,thecomparisonofnumericalanalysisresultsandthesmall signalanalysisresultsisgivenbasedonthecoupledmodeequation.Secondly,usingthenumericalresults,thedependenceofthefundamentalwavelengthandtheQPMgratingperiodonthebulktemperatureisgivenrespectively.Finally ,therelationshipbetweentheoutputpowerofaconvertedlightandthe 3dBbandwidthoffundamentalwavelength ,bulktemperature ,gratingperiodisanalyzed .


Acta Physica Sinica. 2002 51(1): 91-98. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 91-98. article doi:10.7498/aps.51.91 10.7498/aps.51.91 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.91 91-98
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.99

Inthispaper,theexplicitformulaofJostfunctionpairsinthecaseofpureradiationisderivedbyusingthedressingmethodand,theanalysisoftheinteractionbetweensolitonsandradiationismade.Itisfoundthatinthecourseoftransmission ,theopticalpulse,whoseamplitudedecaysaccordingtothelawofthenegativesquarerootofpowerindexalongthepropagatingdirection ,ultimatelyevolvesintotheformofsoliton likewaveintheabsenceofradiation .Itisrevealedthatthefactorγplaysanimportantroleinthespectrumpropertiesfortheoutputoftheopticalpulse .Thedynamicalbehaviouroftheevolutionofsoliton likewavesduringtheinteractionofsolitonsandradiationisalsoanalyzed.


Acta Physica Sinica. 2002 51(1): 99-103. Published 2005-04-11 ]]>

Inthispaper,theexplicitformulaofJostfunctionpairsinthecaseofpureradiationisderivedbyusingthedressingmethodand,theanalysisoftheinteractionbetweensolitonsandradiationismade.Itisfoundthatinthecourseoftransmission ,theopticalpulse,whoseamplitudedecaysaccordingtothelawofthenegativesquarerootofpowerindexalongthepropagatingdirection ,ultimatelyevolvesintotheformofsoliton likewaveintheabsenceofradiation .Itisrevealedthatthefactorγplaysanimportantroleinthespectrumpropertiesfortheoutputoftheopticalpulse .Thedynamicalbehaviouroftheevolutionofsoliton likewavesduringtheinteractionofsolitonsandradiationisalsoanalyzed.


Acta Physica Sinica. 2002 51(1): 99-103. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 99-103. article doi:10.7498/aps.51.99 10.7498/aps.51.99 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.99 99-103
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.104

Scratch resistantsilicaaerogelfilmswitha 77%porosityand 1 . 1 2refractiveindexatambientpressureisreportedusingtheexchangeofsolventandmodificationof—CH3 group.Thesilicafilmswerepreparedinasol gelprocessbyadip coatingmethod ,andthenwerepostannealedinairandamixedgasatmosphere.Thefilmswerecharacterizedwithtransmissionelectronmicroscope,scanningelectronmicroscope,FourierTransforminfraredspectroscope,anellipsometer,andtheabrasiontest,respectively.Withthepostannealing,thefrequencyshiftofFTIRabsorptionω4(TO3 )peakofthefilmstoalowerwavenumberresultsfromadecreaseintheaverageSi—O—Sibridgingangle.Anincreaseinthefullwidthathalf maximum (FWHM)oftheω4peakisascribedtoawidedistributionofthebridginganglebecauseoftheformationofstrainedSi—O—Sibondscausedbythepostannealing.Theabrasionandadhesiontestsindicatethatthemixedgastreatmentnoticeablystrengthensthesilicanetwork .TheincreaseinstrengthisattributedtomoreSi—O—Sibondcross linkagesbetweensilicaparticlesformedbythemixedgastreatment.


Acta Physica Sinica. 2002 51(1): 104-110. Published 2005-04-11 ]]>

Scratch resistantsilicaaerogelfilmswitha 77%porosityand 1 . 1 2refractiveindexatambientpressureisreportedusingtheexchangeofsolventandmodificationof—CH3 group.Thesilicafilmswerepreparedinasol gelprocessbyadip coatingmethod ,andthenwerepostannealedinairandamixedgasatmosphere.Thefilmswerecharacterizedwithtransmissionelectronmicroscope,scanningelectronmicroscope,FourierTransforminfraredspectroscope,anellipsometer,andtheabrasiontest,respectively.Withthepostannealing,thefrequencyshiftofFTIRabsorptionω4(TO3 )peakofthefilmstoalowerwavenumberresultsfromadecreaseintheaverageSi—O—Sibridgingangle.Anincreaseinthefullwidthathalf maximum (FWHM)oftheω4peakisascribedtoawidedistributionofthebridginganglebecauseoftheformationofstrainedSi—O—Sibondscausedbythepostannealing.Theabrasionandadhesiontestsindicatethatthemixedgastreatmentnoticeablystrengthensthesilicanetwork .TheincreaseinstrengthisattributedtomoreSi—O—Sibondcross linkagesbetweensilicaparticlesformedbythemixedgastreatment.


Acta Physica Sinica. 2002 51(1): 104-110. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 104-110. article doi:10.7498/aps.51.104 10.7498/aps.51.104 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.104 104-110
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.111

Transientphotoconductivityanditslight inducedchangewereinvestigatedbyusingaModel440 0boxcaraveragerandsignalprocessorforlightlyboron dopeda Si∶Hfilms.Thetransientphotoconductivitiesofthesampleweremeasuredatanannealedstateandlight soakedstates.Thetransientdecayprocessofthephotoconductivitycanbefittedfairlywellbyasecond orderexponentialdecayfunction ,whichindicatesthatthedecayprocessisrelatedwithtwodifferenttraps.Itisnoteworthythatthephotoconductivityofthefilmincreasesafterlight soaking.ThismaybeduetothedeactivityoftheboronacceptorB-4,andthussomeoftheboronatomscannolongeractasacceptorsanddrivesEFtoshiftsupward .Consequently,thenumberofeffectiverecombinationcentersmaybereducedandsothephotoconductivityincreases.


Acta Physica Sinica. 2002 51(1): 111-114. Published 2005-04-11 ]]>

Transientphotoconductivityanditslight inducedchangewereinvestigatedbyusingaModel440 0boxcaraveragerandsignalprocessorforlightlyboron dopeda Si∶Hfilms.Thetransientphotoconductivitiesofthesampleweremeasuredatanannealedstateandlight soakedstates.Thetransientdecayprocessofthephotoconductivitycanbefittedfairlywellbyasecond orderexponentialdecayfunction ,whichindicatesthatthedecayprocessisrelatedwithtwodifferenttraps.Itisnoteworthythatthephotoconductivityofthefilmincreasesafterlight soaking.ThismaybeduetothedeactivityoftheboronacceptorB-4,andthussomeoftheboronatomscannolongeractasacceptorsanddrivesEFtoshiftsupward .Consequently,thenumberofeffectiverecombinationcentersmaybereducedandsothephotoconductivityincreases.


Acta Physica Sinica. 2002 51(1): 111-114. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 111-114. article doi:10.7498/aps.51.111 10.7498/aps.51.111 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.111 111-114
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.115

Iron silicidefilmshavebeensynthesizedbymetalvaporvacuumarc (MEVVA)ionimplantationofironinto (1 1 1 )and(1 0 0 )orientedsiliconwafers.Thestructureevolutionwascharacterizedusingtransmissionelectronmicroscopy (TEM)andhighresolutionelectronmicroscopy (HREM) .TheβFeSi2filmsandburiedlayerswithdifferentdepthandthicknesswereobtainedbyadjustingtheimplantationenergyanddose .Theformationofα,β,γandCsCl FeSi2 phaseshavebeenobserved .ThephasetransitionorderisγFeSi2→βFeSi2→αFeSi2,CsClFeSi2→βFeSi2→αFeSi2 or βFeSi2→αFeSi2.Anamorphouslayerwasformedat60kVand 4× 1 0 1 7ions cm2 ,thephasetransitionorderisamorphous→β FeSi2 →α FeSi2 .Themorphologyandpositionofthesilicidefilmschangewiththeannealingtemperature.Thesilicidegrainsgrowwithincreasingannealingtemperaturewithfurtherincreaseoftemperature ,thecontinuoussilicidelayersshrinkintoisolatedislandsandtheinterfaceβ FeSi2 Sibe comesrougher.Inthispaper,thecomplicatedorientationrelationshipsexistingbetweenβ FeSi2 andSiwerealsoinvestigated


Acta Physica Sinica. 2002 51(1): 115-124. Published 2005-04-11 ]]>

Iron silicidefilmshavebeensynthesizedbymetalvaporvacuumarc (MEVVA)ionimplantationofironinto (1 1 1 )and(1 0 0 )orientedsiliconwafers.Thestructureevolutionwascharacterizedusingtransmissionelectronmicroscopy (TEM)andhighresolutionelectronmicroscopy (HREM) .TheβFeSi2filmsandburiedlayerswithdifferentdepthandthicknesswereobtainedbyadjustingtheimplantationenergyanddose .Theformationofα,β,γandCsCl FeSi2 phaseshavebeenobserved .ThephasetransitionorderisγFeSi2→βFeSi2→αFeSi2,CsClFeSi2→βFeSi2→αFeSi2 or βFeSi2→αFeSi2.Anamorphouslayerwasformedat60kVand 4× 1 0 1 7ions cm2 ,thephasetransitionorderisamorphous→β FeSi2 →α FeSi2 .Themorphologyandpositionofthesilicidefilmschangewiththeannealingtemperature.Thesilicidegrainsgrowwithincreasingannealingtemperaturewithfurtherincreaseoftemperature ,thecontinuoussilicidelayersshrinkintoisolatedislandsandtheinterfaceβ FeSi2 Sibe comesrougher.Inthispaper,thecomplicatedorientationrelationshipsexistingbetweenβ FeSi2 andSiwerealsoinvestigated


Acta Physica Sinica. 2002 51(1): 115-124. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 115-124. article doi:10.7498/aps.51.115 10.7498/aps.51.115 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.115 115-124
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.125

ThispaperpresentsastudyonelectronicstructuresofdefectsassociatedwithoxygenvacancyVOandleadvacancyVPbinleadtungstatecrystals (PbWO4) ,bytherelativisticself consistentdiscretevariationalembeddedclustermethod .Furthermore,theexcitationenergyisalsocalculated.WefoundthatWO3 +VOcouldbetheabsorptioncenterat3 50nmand 42 0nm ,andtheexistenceofVPbcandiminishthebandgapofWO42 -.


Acta Physica Sinica. 2002 51(1): 125-128. Published 2005-04-11 ]]>

ThispaperpresentsastudyonelectronicstructuresofdefectsassociatedwithoxygenvacancyVOandleadvacancyVPbinleadtungstatecrystals (PbWO4) ,bytherelativisticself consistentdiscretevariationalembeddedclustermethod .Furthermore,theexcitationenergyisalsocalculated.WefoundthatWO3 +VOcouldbetheabsorptioncenterat3 50nmand 42 0nm ,andtheexistenceofVPbcandiminishthebandgapofWO42 -.


Acta Physica Sinica. 2002 51(1): 125-128. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 125-128. article doi:10.7498/aps.51.125 10.7498/aps.51.125 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.125 125-128
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.129

Inthispaper,theexperimentalresultsofthelow temperatureresistancebetween 0.1Kto 2 50Kandspecificheatbetween5Kto 70KofheavyfermioncompoundsCeCu6 xNix(x =0.0 ,0.0 5,0.1 ,0.15,0.2 )arereported .ThedopingeffectoftheNicontentonthelow temperaturepropertiesofCeCu6 isstudied .Thetemperaturesofresistancemaximuasofthesamplesreducedramaticallywiththeincreaseofthedopingcontentx.ThisindicatestheenhancementofmagneticmomentofminorCeionsthatareneighboringNiatomandthedecreaseofthecoherentscatteringbetweenthewholeCeionlatticeandtheconductionelectrons.Thelow temperatureelectronicspecificheatcoefficientγ(CE T ,whereCEistheelectronicspecificheat)isnearlyaconstantatlowtemperatures,butitapparentlyincreasesbelow 8Kduetotheincreaseofitseffectivemass.However,thetem peratureatwhichγbeginstoincreaseisnotsensitivetothecontentofNi,indicatingthatthestatusofmostceriumionsarenotaffected.


Acta Physica Sinica. 2002 51(1): 129-133. Published 2005-04-11 ]]>

Inthispaper,theexperimentalresultsofthelow temperatureresistancebetween 0.1Kto 2 50Kandspecificheatbetween5Kto 70KofheavyfermioncompoundsCeCu6 xNix(x =0.0 ,0.0 5,0.1 ,0.15,0.2 )arereported .ThedopingeffectoftheNicontentonthelow temperaturepropertiesofCeCu6 isstudied .Thetemperaturesofresistancemaximuasofthesamplesreducedramaticallywiththeincreaseofthedopingcontentx.ThisindicatestheenhancementofmagneticmomentofminorCeionsthatareneighboringNiatomandthedecreaseofthecoherentscatteringbetweenthewholeCeionlatticeandtheconductionelectrons.Thelow temperatureelectronicspecificheatcoefficientγ(CE T ,whereCEistheelectronicspecificheat)isnearlyaconstantatlowtemperatures,butitapparentlyincreasesbelow 8Kduetotheincreaseofitseffectivemass.However,thetem peratureatwhichγbeginstoincreaseisnotsensitivetothecontentofNi,indicatingthatthestatusofmostceriumionsarenotaffected.


Acta Physica Sinica. 2002 51(1): 129-133. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 129-133. article doi:10.7498/aps.51.129 10.7498/aps.51.129 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.129 129-133
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.134

Howtoexcitethebiexctionsinapolymerisanessentialsubject,sincethebiexcitonpossessesaneffectofphoto inducedpolarizationreversion.Thispaperproposesanewchanneltoproducethebiexcitonthroughtwo electronexcitation.Therelaxationprocessesofbothlatticedistortionandelectronicstatesaresimulatedbystudyingitsdynamics,andtherelaxationtimeofbiexcitonformationandpolarizationreversionisdetermined .


Acta Physica Sinica. 2002 51(1): 134-137. Published 2005-04-11 ]]>

Howtoexcitethebiexctionsinapolymerisanessentialsubject,sincethebiexcitonpossessesaneffectofphoto inducedpolarizationreversion.Thispaperproposesanewchanneltoproducethebiexcitonthroughtwo electronexcitation.Therelaxationprocessesofbothlatticedistortionandelectronicstatesaresimulatedbystudyingitsdynamics,andtherelaxationtimeofbiexcitonformationandpolarizationreversionisdetermined .


Acta Physica Sinica. 2002 51(1): 134-137. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 134-137. article doi:10.7498/aps.51.134 10.7498/aps.51.134 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.134 134-137
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.138

VoltagetransientsduetothethermalelectroncaptureandemissionofDXcentersinn typeSn dopedAl0 . 2 6 Ga0 .74AsweremeasuredbytheconstantcapacitancetechniqueandtransformedbyLaplacedefectspectroscopy (LDS) .Byanalyzingthevariationsofdiscreteemissionrateswithdifferentcaptureperiods,correspondingrelationsbetweendiscretecaptureandemissionratesandcapturecoefficientsweredetermined .ThefinestructuresofelectroncapturebarriersoftheSn relatedDXcenterswereobtainedbylinearfittingthedataoftemperature dependencesofthecapturecoefficients.TheresultscalcuatedbyusingthefirstprinciplepseudopotentialmethodshowthatthefinestructuresofthecapturebarriersmainlycontributetoAl GaatdifferentlocalconfigurationsnearSnatomsduetothealloyrandomeffect.


Acta Physica Sinica. 2002 51(1): 138-142. Published 2005-04-11 ]]>

VoltagetransientsduetothethermalelectroncaptureandemissionofDXcentersinn typeSn dopedAl0 . 2 6 Ga0 .74AsweremeasuredbytheconstantcapacitancetechniqueandtransformedbyLaplacedefectspectroscopy (LDS) .Byanalyzingthevariationsofdiscreteemissionrateswithdifferentcaptureperiods,correspondingrelationsbetweendiscretecaptureandemissionratesandcapturecoefficientsweredetermined .ThefinestructuresofelectroncapturebarriersoftheSn relatedDXcenterswereobtainedbylinearfittingthedataoftemperature dependencesofthecapturecoefficients.TheresultscalcuatedbyusingthefirstprinciplepseudopotentialmethodshowthatthefinestructuresofthecapturebarriersmainlycontributetoAl GaatdifferentlocalconfigurationsnearSnatomsduetothealloyrandomeffect.


Acta Physica Sinica. 2002 51(1): 138-142. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 138-142. article doi:10.7498/aps.51.138 10.7498/aps.51.138 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.138 138-142
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.143

Aconductancemodelofelectronictunnelingtransferissetup,andanewD .Cconductanceformulainone dimensionaldisorderedsystemisderived .BycalculatingtheD .Cconductivity,therelationshipamongtheelectricfield、temperatureandconductivityisanalyzed ,andtheeffectofdisordereddegreeontheD .Cconductanceisdiscussed .Theresultshowsthattheconductivityofadisorderedsystemdecreaseswiththeincreaseofdisordereddegree.Whentheelectricfieldisweak ,itsconductivityishighandhasaseriesofpeakvalues.Hewever,whentheelectricfieldisstrong,itsconductivityisweak.Inthelow temperatureregion,thedisorderedsystemshowsacharacteristicofnegativedifferentialdependenceofresistanceandtemperature.Onthecontrary,itsconductivitydecreaseswiththeriseoftemperatureinthehigh temperatureregion.Thisresultisingoodagreementwiththeexperiments.


Acta Physica Sinica. 2002 51(1): 143-147. Published 2005-04-11 ]]>

Aconductancemodelofelectronictunnelingtransferissetup,andanewD .Cconductanceformulainone dimensionaldisorderedsystemisderived .BycalculatingtheD .Cconductivity,therelationshipamongtheelectricfield、temperatureandconductivityisanalyzed ,andtheeffectofdisordereddegreeontheD .Cconductanceisdiscussed .Theresultshowsthattheconductivityofadisorderedsystemdecreaseswiththeincreaseofdisordereddegree.Whentheelectricfieldisweak ,itsconductivityishighandhasaseriesofpeakvalues.Hewever,whentheelectricfieldisstrong,itsconductivityisweak.Inthelow temperatureregion,thedisorderedsystemshowsacharacteristicofnegativedifferentialdependenceofresistanceandtemperature.Onthecontrary,itsconductivitydecreaseswiththeriseoftemperatureinthehigh temperatureregion.Thisresultisingoodagreementwiththeexperiments.


Acta Physica Sinica. 2002 51(1): 143-147. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 143-147. article doi:10.7498/aps.51.143 10.7498/aps.51.143 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.143 143-147
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.148

Alarge signalanalyticalmodelwithtemperatureconsideredfor4H SiCradiofrequencypowerMESFETI Vcharacteristicsisproposedbasedonthetheoryofsaturatedcarriervelocity,bymeansofwhichtheself heatingeffectistakenintoaccountsoastoanalyzethetemperatureperformanceofSiCpowerMESFET .Theheattransportbetweenthechannelandthesubstrateismodeledwithnon constanttemperatureT0 atthebottomof4H SiCsubstrateinordertofittherealactionsofdevices.Agoodagree mentbetweensimulationandmeasurementisobtained.


Acta Physica Sinica. 2002 51(1): 148-152. Published 2005-04-11 ]]>

Alarge signalanalyticalmodelwithtemperatureconsideredfor4H SiCradiofrequencypowerMESFETI Vcharacteristicsisproposedbasedonthetheoryofsaturatedcarriervelocity,bymeansofwhichtheself heatingeffectistakenintoaccountsoastoanalyzethetemperatureperformanceofSiCpowerMESFET .Theheattransportbetweenthechannelandthesubstrateismodeledwithnon constanttemperatureT0 atthebottomof4H SiCsubstrateinordertofittherealactionsofdevices.Agoodagree mentbetweensimulationandmeasurementisobtained.


Acta Physica Sinica. 2002 51(1): 148-152. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 148-152. article doi:10.7498/aps.51.148 10.7498/aps.51.148 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.148 148-152
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.153

Wehaveobservedthataweaklightbeamwillexperienceadefocusing contractprocessbeforeitcomestosteadystatewhenpassingthroughaCu:KNSBNcrystalwithatransientspatialelectricfield.Thisprocessbecamefastbyincreasingintensityofthelightbeam .Webelievethatthedefocusing contractprocessresultsfrombotheffectsofthetransientelectricfieldinthecrystalsandthephotovoltaicandrefocusingfieldsgeneratedbythebeamitself.


Acta Physica Sinica. 2002 51(1): 153-158. Published 2005-04-11 ]]>

Wehaveobservedthataweaklightbeamwillexperienceadefocusing contractprocessbeforeitcomestosteadystatewhenpassingthroughaCu:KNSBNcrystalwithatransientspatialelectricfield.Thisprocessbecamefastbyincreasingintensityofthelightbeam .Webelievethatthedefocusing contractprocessresultsfrombotheffectsofthetransientelectricfieldinthecrystalsandthephotovoltaicandrefocusingfieldsgeneratedbythebeamitself.


Acta Physica Sinica. 2002 51(1): 153-158. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 153-158. article doi:10.7498/aps.51.153 10.7498/aps.51.153 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.153 153-158
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.159

Thequantumwavefunctionandthecorrespondingenergylevelsofthedissipativemesoscopiccapacitancecouplingcircuitsareobtainedbyusingunitaryandlineartransformations.Thequantumfluctuationofchargeandcurrentinanarbitraryeigenstateofthesystemhavebeenalsogiven.Theresultsshowthatthefluctuationofchargeandcurrentdependsonnotonlytheeigenstatebutalsotheelectronicdeviceparameters.


Acta Physica Sinica. 2002 51(1): 159-162. Published 2005-04-11 ]]>

Thequantumwavefunctionandthecorrespondingenergylevelsofthedissipativemesoscopiccapacitancecouplingcircuitsareobtainedbyusingunitaryandlineartransformations.Thequantumfluctuationofchargeandcurrentinanarbitraryeigenstateofthesystemhavebeenalsogiven.Theresultsshowthatthefluctuationofchargeandcurrentdependsonnotonlytheeigenstatebutalsotheelectronicdeviceparameters.


Acta Physica Sinica. 2002 51(1): 159-162. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 159-162. article doi:10.7498/aps.51.159 10.7498/aps.51.159 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.159 159-162
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.163

Thispaperpresentsanexperimentalmethodformeasuringthedensityoftrappingcharges.Thismethodisbasedonthedy namicequilibriumequationfortheprocessoftrappedcharges.WecanobtainthedensityandthelocationoftrappingchargesbymeasuringthehighfrequencyC VcurveofMOScapacitancebeforeandafterstress,andthechangeofgatevoltageunderconstantcurrentstress.Theanalyticalexpressionofthedensityoftrappingchargesisproposed .Themethodandtheresultsofparametersextractionarealsopresented .Experimentalresultsshowthatthismethodisconvenientandprecise .


Acta Physica Sinica. 2002 51(1): 163-166. Published 2005-04-11 ]]>

Thispaperpresentsanexperimentalmethodformeasuringthedensityoftrappingcharges.Thismethodisbasedonthedy namicequilibriumequationfortheprocessoftrappedcharges.WecanobtainthedensityandthelocationoftrappingchargesbymeasuringthehighfrequencyC VcurveofMOScapacitancebeforeandafterstress,andthechangeofgatevoltageunderconstantcurrentstress.Theanalyticalexpressionofthedensityoftrappingchargesisproposed .Themethodandtheresultsofparametersextractionarealsopresented .Experimentalresultsshowthatthismethodisconvenientandprecise .


Acta Physica Sinica. 2002 51(1): 163-166. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 163-166. article doi:10.7498/aps.51.163 10.7498/aps.51.163 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.163 163-166
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.167

Inmeasurementsoftimedecayinaperpendiculardouble layeredmedium ,alargeoutputdecaywasobservedwhenaregularsingle poleheadwasusedforbothwritingandreading .Investigationsofthisphenomenonrevealedthatthedemagnetizationofthemediumwascausedbytheinstabilityofthedomainwallofthemainpolefilmandalsobytheconcentrationofstrayfieldsbythemainpoleduringthereadingprocess.Severalcountermeasureswereproposed .


Acta Physica Sinica. 2002 51(1): 167-170. Published 2005-04-11 ]]>

Inmeasurementsoftimedecayinaperpendiculardouble layeredmedium ,alargeoutputdecaywasobservedwhenaregularsingle poleheadwasusedforbothwritingandreading .Investigationsofthisphenomenonrevealedthatthedemagnetizationofthemediumwascausedbytheinstabilityofthedomainwallofthemainpolefilmandalsobytheconcentrationofstrayfieldsbythemainpoleduringthereadingprocess.Severalcountermeasureswereproposed .


Acta Physica Sinica. 2002 51(1): 167-170. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 167-170. article doi:10.7498/aps.51.167 10.7498/aps.51.167 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.167 167-170
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.171

InordertoobtainthefinestructureoftetragonalferroelectricPbFe0.5Nb0.5O3 ,wecalculateditstotalenergybyfull potentiallinearizedaugmentedplanewavemethod .TheequilibriumconfigurationofB sitecations(FeandNb)wasdetermined .ThedisplacementofFeionsalong [0 0 1 ]directioninthefinestructureis0 .0 2 2nmandthatofNbionsis0 .0020nm .Theferroelec tricinstabilityresultsmainlyfromthedisplacementofFeions.


Acta Physica Sinica. 2002 51(1): 171-173. Published 2005-04-11 ]]>

InordertoobtainthefinestructureoftetragonalferroelectricPbFe0.5Nb0.5O3 ,wecalculateditstotalenergybyfull potentiallinearizedaugmentedplanewavemethod .TheequilibriumconfigurationofB sitecations(FeandNb)wasdetermined .ThedisplacementofFeionsalong [0 0 1 ]directioninthefinestructureis0 .0 2 2nmandthatofNbionsis0 .0020nm .Theferroelec tricinstabilityresultsmainlyfromthedisplacementofFeions.


Acta Physica Sinica. 2002 51(1): 171-173. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 171-173. article doi:10.7498/aps.51.171 10.7498/aps.51.171 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.171 171-173
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.174

Thetime resolvedphotoluminescence (TRPL)spectraoforderedGa0 .5In0 . 5Palloysgrownbymetalorganicvaporphaseepitaxywereinvestigated .Theleast squarefittingoftheluminescencedecayspectrashowsthatthereexisttwoexponentialprocesses:forthequickprocessthelifetimeτ1 isabout1 2 8ps— 2 50psand 1 86ps— 546psatroomtemperatureand77K ,respectively;andfortheslowprocessthelifetimeτ2 is,about3 0 8ps— 1 83 2ps,atroomtemperatureandat77K ,aslongasnanosecondandevenmorethan 2 8ns.Theshortlifetimeprocessbelongstotherecombinationofcarriersintheordereddomains,correspondingtothehigh energypeakinthePLspectra.Thelonglifetimeprocesscorrespondstothelow energypeakinthePLspectra.Thestrongexcitationintensitydependenceofτ2 atafixedenergyindicatesthatthelonglifetimeprocesscouldnotbeexplainedintermsofdonor acceptorpair(DAP) .Weattributetheemissiontotherecombinationbetweenthespatiallyseparatedcentersoftheelectronsinordereddomainsandtheholesindisorderedregions.TheTRPLspectraat77Kexhibitablue shiftwithtimedelay ,indicatingthatthecarrierstransferfromdisorderedregionstoordereddomains.


Acta Physica Sinica. 2002 51(1): 174-177. Published 2005-04-11 ]]>

Thetime resolvedphotoluminescence (TRPL)spectraoforderedGa0 .5In0 . 5Palloysgrownbymetalorganicvaporphaseepitaxywereinvestigated .Theleast squarefittingoftheluminescencedecayspectrashowsthatthereexisttwoexponentialprocesses:forthequickprocessthelifetimeτ1 isabout1 2 8ps— 2 50psand 1 86ps— 546psatroomtemperatureand77K ,respectively;andfortheslowprocessthelifetimeτ2 is,about3 0 8ps— 1 83 2ps,atroomtemperatureandat77K ,aslongasnanosecondandevenmorethan 2 8ns.Theshortlifetimeprocessbelongstotherecombinationofcarriersintheordereddomains,correspondingtothehigh energypeakinthePLspectra.Thelonglifetimeprocesscorrespondstothelow energypeakinthePLspectra.Thestrongexcitationintensitydependenceofτ2 atafixedenergyindicatesthatthelonglifetimeprocesscouldnotbeexplainedintermsofdonor acceptorpair(DAP) .Weattributetheemissiontotherecombinationbetweenthespatiallyseparatedcentersoftheelectronsinordereddomainsandtheholesindisorderedregions.TheTRPLspectraat77Kexhibitablue shiftwithtimedelay ,indicatingthatthecarrierstransferfromdisorderedregionstoordereddomains.


Acta Physica Sinica. 2002 51(1): 174-177. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 174-177. article doi:10.7498/aps.51.174 10.7498/aps.51.174 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.174 174-177
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.178

TheGeO2 SiO2 gel glasseswerepreparedbythesol gelmethodwithtetraethoxysilane (Si(OC2 H5) 4)and 3 trichloroger maniumpropanoicaci (Cl3 GeCH2 CH2 COOH)asstartingmaterials.Thegel glassesshowastrongroom temperaturephotoluminescencewithpeaksat575and 62 4nmundertheexcitationofthe 53 2nmlineofaNd∶YAGlaser.ThephotoluminescencespectraarecausedbyGeO2 nanoparticlesembeddedingel glasses.TheGeO2 SiO2 gel glassesarecharacterizedbytheopticalabsorption,X raydiffraction (XRD)andtransmissionelectionmecroscopy.ThesizeofGeO2 nanoparticlesembeddedingelglassesbecomeslargerastheGeO2 contentincreases,andthustheopticalabsorptionedgeofthegel glassshiftstothelower energyside .TheGeO2 nanoparticlestructuresarefoundtobeamorphousGeO2 inthegel glassesbytheXRDandtheelectrondiffractionpattern .


Acta Physica Sinica. 2002 51(1): 178-182. Published 2005-04-11 ]]>

TheGeO2 SiO2 gel glasseswerepreparedbythesol gelmethodwithtetraethoxysilane (Si(OC2 H5) 4)and 3 trichloroger maniumpropanoicaci (Cl3 GeCH2 CH2 COOH)asstartingmaterials.Thegel glassesshowastrongroom temperaturephotoluminescencewithpeaksat575and 62 4nmundertheexcitationofthe 53 2nmlineofaNd∶YAGlaser.ThephotoluminescencespectraarecausedbyGeO2 nanoparticlesembeddedingel glasses.TheGeO2 SiO2 gel glassesarecharacterizedbytheopticalabsorption,X raydiffraction (XRD)andtransmissionelectionmecroscopy.ThesizeofGeO2 nanoparticlesembeddedingelglassesbecomeslargerastheGeO2 contentincreases,andthustheopticalabsorptionedgeofthegel glassshiftstothelower energyside .TheGeO2 nanoparticlestructuresarefoundtobeamorphousGeO2 inthegel glassesbytheXRDandtheelectrondiffractionpattern .


Acta Physica Sinica. 2002 51(1): 178-182. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 178-182. article doi:10.7498/aps.51.178 10.7498/aps.51.178 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.178 178-182
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.183

NanocrystallineGaSbParticlesembeddedinSiO2 filmsweregrownbyradiofrequencymagnetronco sputtering .ThetransmissionabsorptionofthecompositefilmwasrecordedwithCary 5Espectrophotometeratroomtemperature.Thetwo photonopticalnonlinearitiesoftheGaSb SiO2 compositethinfilmsat63 2 .8nmweremeasuredbyZ scanmethod,andtheresultsare:twophotonabsorptioncoefficientβ≈ 0 . 0 82m W ,nonlinearrefractiveindexγ≈ 3 .76× 1 0 -9m2 Wandthenonlinearsusceptibilityχ(3 )≈ 7.84× 1 0 -9esu .


Acta Physica Sinica. 2002 51(1): 183-186. Published 2005-04-11 ]]>

NanocrystallineGaSbParticlesembeddedinSiO2 filmsweregrownbyradiofrequencymagnetronco sputtering .ThetransmissionabsorptionofthecompositefilmwasrecordedwithCary 5Espectrophotometeratroomtemperature.Thetwo photonopticalnonlinearitiesoftheGaSb SiO2 compositethinfilmsat63 2 .8nmweremeasuredbyZ scanmethod,andtheresultsare:twophotonabsorptioncoefficientβ≈ 0 . 0 82m W ,nonlinearrefractiveindexγ≈ 3 .76× 1 0 -9m2 Wandthenonlinearsusceptibilityχ(3 )≈ 7.84× 1 0 -9esu .


Acta Physica Sinica. 2002 51(1): 183-186. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 183-186. article doi:10.7498/aps.51.183 10.7498/aps.51.183 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.183 183-186
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.187

OpticallytransparentSb dopedSrTiO3 (SrTi1-xSbxO3 )thinfilmswithatransmittancehigherthan 90 %invisibleregionhavebeengrownonSrTiO3 (0 0 1 )substratesbypulsedlaserdepositionmethodusinganXeCllaserunderoxygenpartialpressureof2 0Pa.ThethinfilmwithSbdopingconcentrationofx=0 .0 5showsmetallic likeconductivitywitharesistivityρ~ 6.99×1 0 -3 Ω·cmatroomtemperature.XPSandsynchrotronradiationphotoelectronspectroscopy (SR PES)measurementfromtheSrTi0 . 95Sb0 .0 5O3 thinfilmrevealsthattheshallowanddeepimpuritydonorlevelswithinthebandgapoftheparentcompoundSrTiO3 areinducedbytheSbdoping.ThedelocalizedelectronswithintheshallowlevelsneartheFermilevelcanbeexcitedtotheconductionbandasfreecarriersforelectricalconductionbythermalionization.Thewidebandgap ,smalltransitionprobabilityandweakabsorptionduetothelowdensityofstatesintheimpuritylevelsresultintheopticaltransparencyofthefilm .


Acta Physica Sinica. 2002 51(1): 187-191. Published 2005-04-11 ]]>

OpticallytransparentSb dopedSrTiO3 (SrTi1-xSbxO3 )thinfilmswithatransmittancehigherthan 90 %invisibleregionhavebeengrownonSrTiO3 (0 0 1 )substratesbypulsedlaserdepositionmethodusinganXeCllaserunderoxygenpartialpressureof2 0Pa.ThethinfilmwithSbdopingconcentrationofx=0 .0 5showsmetallic likeconductivitywitharesistivityρ~ 6.99×1 0 -3 Ω·cmatroomtemperature.XPSandsynchrotronradiationphotoelectronspectroscopy (SR PES)measurementfromtheSrTi0 . 95Sb0 .0 5O3 thinfilmrevealsthattheshallowanddeepimpuritydonorlevelswithinthebandgapoftheparentcompoundSrTiO3 areinducedbytheSbdoping.ThedelocalizedelectronswithintheshallowlevelsneartheFermilevelcanbeexcitedtotheconductionbandasfreecarriersforelectricalconductionbythermalionization.Thewidebandgap ,smalltransitionprobabilityandweakabsorptionduetothelowdensityofstatesintheimpuritylevelsresultintheopticaltransparencyofthefilm .


Acta Physica Sinica. 2002 51(1): 187-191. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 187-191. article doi:10.7498/aps.51.187 10.7498/aps.51.187 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.187 187-191
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.192

Thedomainreversalcharacteristicsofnear stoichiometricLiNbO3 singlecrystals,whichwerepreparedbytheCzochralskimethodwithK2 Ofluxandthevaportransportequilibration,wereinvestigated.Theresultsshowthattheswitchfieldfor1 80°ferroelectricdomainreversalinthenear stoichiomentLiNbO3 crystaldecreaseswith [Li] [Nb]ratio.Wesuccessfullyachieved1 80°domainreversalinthenear stoichiometricLiNbO3 samplesof1 . 0mmthicknessbyusinga4. 0kV mmswitchfield .ApreliminaryexplanationforexperimentalresultsisgivenbasedontheLi sitevacancypointdefectmodel.


Acta Physica Sinica. 2002 51(1): 192-196. Published 2005-04-11 ]]>

Thedomainreversalcharacteristicsofnear stoichiometricLiNbO3 singlecrystals,whichwerepreparedbytheCzochralskimethodwithK2 Ofluxandthevaportransportequilibration,wereinvestigated.Theresultsshowthattheswitchfieldfor1 80°ferroelectricdomainreversalinthenear stoichiomentLiNbO3 crystaldecreaseswith [Li] [Nb]ratio.Wesuccessfullyachieved1 80°domainreversalinthenear stoichiometricLiNbO3 samplesof1 . 0mmthicknessbyusinga4. 0kV mmswitchfield .ApreliminaryexplanationforexperimentalresultsisgivenbasedontheLi sitevacancypointdefectmodel.


Acta Physica Sinica. 2002 51(1): 192-196. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 192-196. article doi:10.7498/aps.51.192 10.7498/aps.51.192 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.192 192-196
<![CDATA[]]> //m.suprmerch.com/en/article/doi/10.7498/aps.51.197

ThecollapsesolutionofastarwithuniformdensityandzeropressuregivenintheclassicpaperofOppenheimerandSnyderisprovedtobeincomplete;itcannotcorrectlyconnecttheFriedmannandSchwarzschildmetricsastheinteriorandexteriorsolutions.Bytheextensionofsolutionparameterinthediscretespacetime,weconstructacompletegravitationalsolution ,whichcouldmakeanequivalenceconnectionbetweentheFriedmannandSchwarzschildmetricsandisprovestobesingularity free.Thesolutionshowsthatthereexistsarelationshipamongmatter,gravitationanddiscretespacetimeconfiguration .


Acta Physica Sinica. 2002 51(1): 197-200. Published 2005-04-11 ]]>

ThecollapsesolutionofastarwithuniformdensityandzeropressuregivenintheclassicpaperofOppenheimerandSnyderisprovedtobeincomplete;itcannotcorrectlyconnecttheFriedmannandSchwarzschildmetricsastheinteriorandexteriorsolutions.Bytheextensionofsolutionparameterinthediscretespacetime,weconstructacompletegravitationalsolution ,whichcouldmakeanequivalenceconnectionbetweentheFriedmannandSchwarzschildmetricsandisprovestobesingularity free.Thesolutionshowsthatthereexistsarelationshipamongmatter,gravitationanddiscretespacetimeconfiguration .


Acta Physica Sinica. 2002 51(1): 197-200. Published 2005-04-11 ]]>
2002-01-05T00:00:00+00:00 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 197-200. article doi:10.7498/aps.51.197 10.7498/aps.51.197 Acta Physica Sinica 51 1 2005-04-11 //m.suprmerch.com/en/article/doi/10.7498/aps.51.197 197-200