Multiple sign reversals of the exchange bias field in polycrystalline SmCr0.9Fe0.1O3

doi:10.1088/1674-1056/23/12/127502

中国物理B ›› 2014, Vol. 23 ›› Issue (12): 127502-127502.doi: 10.1088/1674-1056/23/12/127502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Multiple sign reversals of the exchange bias field in polycrystalline SmCr_0.9Fe_0.1O₃

房勇, 颜士明, 龚元元, 朱卫利, 曹庆琪, 王敦辉, 都有为

Jiangsu Key Laboratory for Nano Technology and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

收稿日期:2014-05-20 修回日期:2014-08-04 出版日期:2014-12-15 发布日期:2014-12-15
基金资助:
Project supported by the National Basic Research Program of China (Grant Nos. 2014AA032904 and 2009CB929501) and the National Natural Science Foundation of China (Grant Nos. 11174130 and U1232210).

Multiple sign reversals of the exchange bias field in polycrystalline SmCr_0.9Fe_0.1O₃

Fang Yong (房勇), Yan Shi-Ming (颜士明), Gong Yuan-Yuan (龚元元), Zhu Wei-Li (朱卫利), Cao Qing-Qi (曹庆琪), Wang Dun-Hui (王敦辉), Du You-Wei (都有为)

Jiangsu Key Laboratory for Nano Technology and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

Received:2014-05-20 Revised:2014-08-04 Online:2014-12-15 Published:2014-12-15
Contact: Cao Qing-Qi E-mail:qqcao@nju.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant Nos. 2014AA032904 and 2009CB929501) and the National Natural Science Foundation of China (Grant Nos. 11174130 and U1232210).

摘要/Abstract

摘要：

We synthesize the perovskite compound SmCr_0.9Fe_0.1O₃ by the sol–gel method and investigate its exchange bias properties through thermomagnetic and isothermal magnetization measurements. The sign reversals of the exchange bias field are observed at the magnetization compensation temperatures 29.6 K and 96.2 K. It is demonstrated that the occurrence of the exchange bias originates from the antiferromagnetic coupling between the Cr-rich and Fe–Cr regions, of which the net magnetization is temperature-dependent. These results imply that there are potential applications in single systems with sign reversals of both magnetization and exchange bias.

关键词: magnetism, antiferromagnetic, exchange bias

Abstract:

Key words: magnetism, antiferromagnetic, exchange bias

中图分类号: (Ferrimagnetics)

75.50.Gg

75.50.Ee (Antiferromagnetics) 75.30.Et (Exchange and superexchange interactions)

房勇, 颜士明, 龚元元, 朱卫利, 曹庆琪, 王敦辉, 都有为. Multiple sign reversals of the exchange bias field in polycrystalline SmCr_0.9Fe_0.1O₃[J]. 中国物理B, 2014, 23(12): 127502-127502.

Fang Yong (房勇), Yan Shi-Ming (颜士明), Gong Yuan-Yuan (龚元元), Zhu Wei-Li (朱卫利), Cao Qing-Qi (曹庆琪), Wang Dun-Hui (王敦辉), Du You-Wei (都有为). Multiple sign reversals of the exchange bias field in polycrystalline SmCr_0.9Fe_0.1O₃[J]. Chin. Phys. B, 2014, 23(12): 127502-127502.

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Multiple sign reversals of the exchange bias field in polycrystalline SmCr_0.9Fe_0.1O₃

Multiple sign reversals of the exchange bias field in polycrystalline SmCr_0.9Fe_0.1O₃

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