Bi0.5Ca0.5Mn1-xCoxO3体系中的电荷有序和相分离

王强

doi:10.7498/aps.59.6569

摘要

利用固相反应法制备了Bi0.5Ca0.5Mn1-xCoxO3(0≤x≤0.12)系列多晶样品.研究了Co掺杂对Bi0.5Ca0.5MnO3电荷有序的影响.结果表明,Co掺杂导致电荷有序相逐渐融化、铁磁相互作用的增强;当x≥0.08时,电荷有序转变峰完全消失,但残留的反铁磁电荷有

关键词:

Polycrystalline Bi0.5Ca0.5Mn1-xCoxO3(0≤ x≤0.12) samples are synthesized by using the solid-state reaction. The effects of Co-doping on charge order of Bi0.5Ca0.5MnO3 are studied. The results show that Co doping leads to the melting of the charge order and the enhancement of the ferromagnetic correlation. For x≥0.08, the charge order transition is completely suppressed; however, there are still remaining antiferromagnetic domains inside the system. The phase separation or the coexistence of the charge order and ferromagnetic phase induced by Co-doping plays an important role in the low temperature properties for the system. Moreover, unlike in the case of rare-earth manganites, Co is more efficient to suppress charge order of Bi0.5Ca0.5MnO3 than Cr.

Keywords:

作者及机构信息

王强

1.
陕西教育学院数理工程系,西安 710061

Authors and contacts

Wang Qiang

1.
Department of Mathematical and Physical Engineering, Shaanxi Institute of Education, Xi'an 710061, China

参考文献

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[2]	Li X J, Wang Q 2009 Acta Phys. Sin. 58 6482 (in Chinese) [李晓娟、王强 2009 58 6482]
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[7]	García-Muoz J L, Frontera C, Aranda M A G, Llobet A, Ritter C 2001 Phys. Rev. B 63 064415
[8]	Machida A, Moritomo Y, Ohoyama K, Katsufuji T, Nakamura A 2002 Phys. Rev. B 65 064435
[9]	Guo H Y, Liu N, Cai Z R, Zhang Y H 2006 Acta Phys. Sin. 55 865 (in Chinese)[郭焕银、刘宁、蔡之让、张裕恒 2006 55 865]
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[13]	Zheng G H, Sun Y P, Zhu X B, Song W H 2006 Solid State Commun. 137 326
[14]	Binder K, Young A P 1986 Rev. Mod. Phys. 58 801
[15]	Tzankov D, Kovacheva D, Krezhov K, Pu Dz＇ niak R, Wi Ds＇ niewski A, Sváb E, Mikhov M 2005 J. Phys.: Condens. Matter. 17 4319
[16]	Zhao J J, Xing R, Lu Y, Haosibayar, Zhao M Y, Jin X, Zheng L, Ning W, Sun Y, Cheng Z H 2008 Chin. Phys. B 17 2021
[17]	Dho J , Kim W S, Hur N H 2002 Phys. Rev. Lett. 89 027202
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[19]	Li X J, Wang Q 2009 Physica B 404 3703
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[21]	Lu W J, Sun Y P, Zhu X B, Song W H, Du J J 2006 Solid State Commun. 138 200
[22]	Barnabé A, Maignan A, Hervieu M, Damay F, Martin C, Raveau B 1997 Appl. Phys. Lett. 71 3907

施引文献

[1]	Salamon M B, Jaime M 2001 Rev. Mod. Phys. 73 583
[2]	Li X J, Wang Q 2009 Acta Phys. Sin. 58 6482 (in Chinese) [李晓娟、王强 2009 58 6482]
[3]	Ramirez A P, Schiffer P, Cheong S W, Chen C H, Bao W, Palstra T T M, Gammel P L, Bishop D J, Zegarski B 1996 Phys. Rev. Lett. 76 3188
[4]	Gao H P, Li B, Yu Y, Ruan K Q, Wu B M 2004 Acta Phys. Sin. 53 3853 (in Chinese)[高惠平、李波、余勇、阮可青、吴柏枚 2004 53 3853]
[5]	García-Muoz J L, Frontera C, Respaud M, Giot M, Ritter C, Capdevila X G 2005 Phys. Rev. B 72 054432
[6]	Kirste A, Goiran M, Respaud M, Vanaken J, Broto J M, Rakoto H, von Ortenberg M, Frontera C, García-Muoz J L 2003 Phys. Rev. B 67 134413
[7]	García-Muoz J L, Frontera C, Aranda M A G, Llobet A, Ritter C 2001 Phys. Rev. B 63 064415
[8]	Machida A, Moritomo Y, Ohoyama K, Katsufuji T, Nakamura A 2002 Phys. Rev. B 65 064435
[9]	Guo H Y, Liu N, Cai Z R, Zhang Y H 2006 Acta Phys. Sin. 55 865 (in Chinese)[郭焕银、刘宁、蔡之让、张裕恒 2006 55 865]
[10]	Xiong C M, Sun J R, Li R W, Zhang S Y, Zhao T Y, Shen B G 2004 J. Appl. Phys. 95 1336
[11]	Bao W, Axe J D, Chen C H, Cheong S W 1997 Phys. Rev. Lett. 78 543
[12]	Woo H, Tyson T A, Croft M, Cheong S W, Woicik J C 2001 Phys. Rev. B 63 134412
[13]	Zheng G H, Sun Y P, Zhu X B, Song W H 2006 Solid State Commun. 137 326
[14]	Binder K, Young A P 1986 Rev. Mod. Phys. 58 801
[15]	Tzankov D, Kovacheva D, Krezhov K, Pu Dz＇ niak R, Wi Ds＇ niewski A, Sváb E, Mikhov M 2005 J. Phys.: Condens. Matter. 17 4319
[16]	Zhao J J, Xing R, Lu Y, Haosibayar, Zhao M Y, Jin X, Zheng L, Ning W, Sun Y, Cheng Z H 2008 Chin. Phys. B 17 2021
[17]	Dho J , Kim W S, Hur N H 2002 Phys. Rev. Lett. 89 027202
[18]	Yu Q Y, Zhang J C, Jia R R, Jing C, Cao S X 2008 Acta Phys. Sin. 57 453 (in Chinese) [於乾英、张金仓、贾蓉蓉、敬超、曹世勋 2008 57 453]
[19]	Li X J, Wang Q 2009 Physica B 404 3703
[20]	Volkov N, Petrakovskii G, Patrin K, Sablina K, Eremin E, Vasiliev V, Vasiliev A, Molokeev M, Bni P, Clementyev E 2006 Phys. Rev. B 73 104401
[21]	Lu W J, Sun Y P, Zhu X B, Song W H, Du J J 2006 Solid State Commun. 138 200
[22]	Barnabé A, Maignan A, Hervieu M, Damay F, Martin C, Raveau B 1997 Appl. Phys. Lett. 71 3907

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