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(001) oriented(BiFeO3)25/(La0.7Sr0.3MnO3)25 multilayered thin films are fabricated on (001)SrTiO3 substrate by rf-magnetron sputtering. UV-vis absorption spectrum analysis in a photon energy range of 1.2-6.4 eV is carried out, and the result shows that in a range of 1.3-2.1 eV the absorption is enhanced compared with that on SrTiO3 substrate. And the optical band gap of BiFeO3 is around 2.7 eV, which is in accordance with other reportsed results very well. Furthermore, the current-voltage curves are measured in a temperature range of 100-300 K, and the analyses according to several dielectric conduction models exhibite that the space-charge-limited conduction is dominated in the fabricated (BiFeO3)25/(La0.7Sr0.3MnO3)25 multilayered thin films.
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Keywords:
- multilayered thin films /
- absorbance /
- space-charge-limited conduction
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[33] Zhu H, Wang S, Jiang P, Shen J, Tang W 2010 J. Korean Phys. Soc. 57 268
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[41] [42] Takenaka K, Shiozaki R, Sugai S 2002 Phys. Rev. B 65 184436
[43] Simmons J G 1965 Phys. Rev. Lett. 15 967
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[49] Frenkel J 1938 Tech. Phys. USSR 5 685
[50] [51] [52] Lampert M A 1956 Phys. Rev. 103 1648
[53] Saha S, Krupanidhi S 2000 J. Appl. Phys. 88 3506
[54] -
[1] Ramesh R, Spaldin Nicola A 2007 Nature Materials 6 21
[2] [3] Fiebig M, Lottermoser Th, Frhlich D, Goltsev A V, Pisarev R V 2002 Nature 419 818
[4] [5] Wang K F, Liu J M, Ren Z F 2009 Adv. in Phys. 58 321
[6] [7] Filippetti A, Hill N A 2001 J. Magn. Magn. Mater. 236 176
[8] [9] Michel C, Moreau J M, Achenbach G D 1969 Solid State Commun. 7 701
[10] [11] Martin M C, Shirane G, Endon Y, Hirota K, Moritomo Y, Tokura Y 1996 Phys. Rev. B 53 14285
[12] Zhou C C, Jin K X, Luo B C, Cao X S, Chen C L 2010 Mater. Lett. 64 1713
[13] [14] [15] Yu P, Lee J S, Okamoto S, Rossell M D, Huijben M, Yang C H, He Q, Zhang J X, Yang S Y, Lee M J, Ramasse Q M, Erni R, Chu Y H, Arena D A, Kao C C, Martin L W, Ramesh R 2010 Phys. Rev. Lett. 105 027201
[16] Qi X, Dho J, Tomov R, Blamire M G, MacManus-Driscoll J L 2005 Appl. Phys. Lett. 86 062903
[17] [18] [19] Wang Y, Nan C W 2006 Appl. Phys. Lett. 89 052903
[20] Wang Y, Wang J 2009 J. Phys. D: Appl. Phys. 42 162001
[21] [22] Singh S K, Ishiwara H, Sato K, Maruyama 2007 J. Appl. Phys. 102 094109
[23] [24] [25] Kawae T, Terauchi Y, Tsuda H, Kumeda M, Morimoto A 2009 Appl. Phys. Lett. 94 112904
[26] [27] [28] Ranjith R, Prellier W, Cheah J W, Wang J, Wu T 2009 Appl. Phys. Lett. 92 232905
[29] [30] Wang J W, Zhang Y, Jiang P, Tang W H 2009 Acta Phys. Sin. 58 4199 (in Chinese)[王君伟、张 勇、姜 平、唐为华 2009 58 4199]
[31] [32] Zhu H W, Jiang P, Wang S L, Mao L F, Tang W H 2010 Acta Phys. Sin. 59 5710(in Chinese) [朱晖文、姜 平、王顺利、毛凌峰、唐为华 2010 59 5710]
[33] Zhu H, Wang S, Jiang P, Shen J, Tang W 2010 J. Korean Phys. Soc. 57 268
[34] [35] [36] van Benthem K, Elssser C, French R H 2001 J. Appl. Phys. 90 6156
[37] [38] Basu S R, Martin L W, Chu Y H, Gajek M, Ramesh R, Rai R C, Xu X, Musfeldt J L 2008 Appl. Phys. Lett. 92 091905
[39] [40] Clark S J, Robertson J 2007 Appl. Phys. Lett. 90 132903
[41] [42] Takenaka K, Shiozaki R, Sugai S 2002 Phys. Rev. B 65 184436
[43] Simmons J G 1965 Phys. Rev. Lett. 15 967
[44] [45] [46] Dawber M, Rabe K M, Scott J F 2005 Rev. Mod. Phys. 77 1083
[47] [48] Scott J F 2006 J. Phys.: Condens. Matter. 18 R361
[49] Frenkel J 1938 Tech. Phys. USSR 5 685
[50] [51] [52] Lampert M A 1956 Phys. Rev. 103 1648
[53] Saha S, Krupanidhi S 2000 J. Appl. Phys. 88 3506
[54]
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