ChargedisproportionationinducedexchangebiasinLa0.5Ca0.5FeO3-δ

被引：0

作者：

LIANG YaQiong ^{[1
,2
]}

ZHANG XiangQun ^{[2
]}

JIN JinLing ^{[2
]}

ZHAN QingFeng ^{[3
]}

CHENG ZhaoHua ^{[2
]}

机构：

[1] Logistic School,Beijing Wuzi University

[2] State Key Laboratory of Magnetism,Institute of Physics,Chinese Academy of Sciences

[3] Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences

来源：

Science China(Physics,Mechanics & Astronomy) | 2013年 / 11期

关键词：

exchange bias; charge disproportionation; cluster glass;

D O I：

暂无

中图分类号：

O611.4 [无机合成化学];

学科分类号：

070301 ; 081704 ;

摘要：

We observed an exchange bias effect in La0.5Ca0.5FeO3 perovskite compound.The exchange bias is associated with the charge disproportionation transition from Fe4+ions to Fe3+and Fe5+ions below 175 K.The competition between the ferromagnetic interaction of Fe3+and Fe5+ions and the antiferromagnetic one of Fe3+and Fe3+ions results in a unidirectional anisotropy in the cluster-glass system.An antiferromagnetically interfacial exchange coupling constant Ji1.95 meV at the cluster-glass region was yielded by fitting the cooling field-dependence of the exchange bias field.

引用

页码：2085 / 2089

页数：5

共 3 条

[1]

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[2] Exchange bias [J].

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[3]

Magnetic properties of monodispersed Co/CoO clusters. Peng D L,Sumiyama K,Hihara T,et al. Physical Review B Condensed Matter and Materials Physics . 2000

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