Sr掺杂Eu1-xSrxMnO3体系的磁相变以及输运特性研究

张佳佳; 曹世勋; 袁淑娟; 李哲; 康保娟; 张金仓

doi:10.7498/aps.59.6494

摘要

对Eu1-xSrxMnO3 (ESMO, x=0—1)体系的结构和磁性进行了系统的研究,结果表明Sr的掺入使EuMnO3反铁磁母体的磁结构发生巨大的变化.通过磁化和电输运测量,深入探讨了高掺杂浓度Eu0.4Sr0.6MnO3和Eu0.3Sr0.7MnO3

关键词:

The structure and magnetic properties of the Eu1-xSrxMnO3 (ESMO x=0—1) system have been systematically studied. The results indicate that the substitution of Sr for Eu can greatly change the magnetic properties of antiferromagnetic EuMnO3 matrix. In the case of high doping compounds (Eu0.4Sr0.6MnO3 and Eu0.3Sr0.7MnO3), the abnormal magnetic and electrical properties result from the competition between their being ferromagnetic and antiferromagnetic. At low temperature, the conducting behavior of the Eu0.4Sr0.6MnO3 and Eu0.3Sr0.7MnO3 are well fitted by the Mott variable range hopping (VRH) model.

Keywords:

作者及机构信息

1.
上海大学理学院物理系,上海 200444

基金项目: 国家自然科学基金(批准号:50932003, 10674092, 10774097),高等学校博士学科点专项科研基金(批准号:20093108120006),上海市教育委员会科技创新基金重点项目(批准号:09ZZ95)和上海市科学技术委员会 (批准号:08DJ1400202,10ZR1411000)资助的课题.

Authors and contacts

1.
Department of Physics, Shanghai University, Shanghai 200444, China

参考文献

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[14]	Tadokor Y, Shan Y J , Nakamura T, Nakamura S 1998 Solid State Ionics 108 261
[15]	Anderson P W, Hasegawa H 1995 Phys. Rev. 100 675
[16]	Zener C 1951 Phys. Rev. 82 403
[17]	García-Hernández M, Martínez J L, Martínez-Lope M J, Casais M T, Alonso J A 2001 Phys. Rev. Lett. 86 2443
[18]	Rogado N S, Li J, Aleight A W, Subramanian M A 2005 Adv. Mater. 17 2225
[19]	Wang S P, Zhang J C, Cao G X, Jing C, Cao S X 2007 Phys. Rev. B 76 054415
[20]	Karmakar S, Taran S, Bose E, Chaudhuri B K 2008 Phys. Rev. B 77 144409

施引文献

[1]	Singh-Bhalla G, Selcuk S, Dhakal T, Biswas A, Hebard A F 2009 Phys. Rev. Lett. 102 077205
[2]	Jiang W, Zhu C B, Yu G H, Lo V C 2009 Chin. Phys. B 18 3547
[3]	Liu J M, Wang K F 2005 Pro. in Phys. 25 82 (in Chinese) [刘俊明、王克峰 2005 物理学进展 25 82]
[4]	Ward T Z, Zhang X G, Yin L F, Zhang X Q, Liu M, Snijders P C, Jessse S, Plummer E W, Cheng Z H, Dagotto E, Shen J 2009 Phys. Rev. Lett. 102 087201
[5]	Hemberger J, Schrettle F, Pimenov A, Lunkenheimer P, Ivanov V Y, Mukhin A A, Balbashov M B, Loidl A 2007 Phys. Rev. B 75 035118
[6]	Zhou W P, Yun G H, Liang X X 2009 Chin. Phys. B 18 5496
[7]	Zhang C J, Yin Y, Pi P, Zhang Y H 2005 Phys. Rev. B 71 014408
[8]	Gao T, Cao S X, Li W J, Kang B J, Yuan S J, Zhang J C 2006 Acta Phys. Sin. 55 3962 (in Chinese) [高湉、曹世勋、李文娟、康保娟、袁淑娟、张金仓 2006 物理学报 55 3962]
[9]	Xiao C T, Han L A, Xue D S, Zhao J H, Kunkel H, Williams G 2003 Acta Phys. Sin. 52 1245 (in Chinese) [肖春涛、韩立安、薛德胜、赵俊慧、Kunkel H、Williams G 2003 物理学报 52 1245]
[10]	Patra M, De K, Majumdar S, Giri S 2009 Appl. Phys. Lett. 94 092506
[11]	Sundaresan A, Maignan A, Raveau B 1996 Phys. Rev. B 55 5596
[12]	Wang J Z, Sun J R, Liu G J, Xie Y W, Wang D J, Zhao T Y, Shen B G 2007 Phys. Rev. B 76 104428
[13]	Shu M M, Cao S X, Gao T, Yuan S J, Kang B J, Yu L M, Zhang J C 2009 Acta Phys. Sin. 58 3309 (in Chinese) [舒苗苗、曹世勋、高湉、袁淑娟、康保娟、郁黎明、张金仓 2009 物理学报 58 3309]
[14]	Tadokor Y, Shan Y J , Nakamura T, Nakamura S 1998 Solid State Ionics 108 261
[15]	Anderson P W, Hasegawa H 1995 Phys. Rev. 100 675
[16]	Zener C 1951 Phys. Rev. 82 403
[17]	García-Hernández M, Martínez J L, Martínez-Lope M J, Casais M T, Alonso J A 2001 Phys. Rev. Lett. 86 2443
[18]	Rogado N S, Li J, Aleight A W, Subramanian M A 2005 Adv. Mater. 17 2225
[19]	Wang S P, Zhang J C, Cao G X, Jing C, Cao S X 2007 Phys. Rev. B 76 054415
[20]	Karmakar S, Taran S, Bose E, Chaudhuri B K 2008 Phys. Rev. B 77 144409

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