| Multiferroic properties and exchange bias in Bi1-xSrxFeO3 （x = 0-0.6） ceramics |
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| 引用本文： | 马争争,李建青,陈子鹏,田召明,胡晓军,黄海军.Multiferroic properties and exchange bias in Bi1-xSrxFeO3 （x = 0-0.6） ceramics[J].中国物理 B,2014(9):446-450. |
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| 作者姓名： | 马争争 李建青 陈子鹏 田召明 胡晓军 黄海军 |
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| 作者单位： | [1]Wuhan University of Technology, Wuhan 430070, China; [2]Huazhong University of Science and Technology, Wuhan 430074, China |
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| 基金项目： | supported by the Program for New Century Excellent Talents in Universities of China(Grant No.41322028);the Fundamental Research Funds for the Central University of China(Grant No.WUT 2014-Ia-018);the National Science Fund for Excellent Young Scholars of China(Grant No.41074056) |
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| 摘 要： | Multiferroic properties and exchange bias(EB) in Bi1-xSrxFeO3(x = 0–0.6) ceramics synthesized by a modified Pechini method are investigated. Sr concentration dependence of structure distorting, ferroelectric properties, and dielectric properties were studied at room temperature. Appropriate Sr doping(x = 0.05–0.2) has been found to decrease the conductivity, enhance ferroelectric properties and give rise to high dielectric constant. Compared with antiferromagnetic BiFeO3 compound, BSFO-x(0 ≤ x ≤ 0.4) ceramics show weak ferromagnetism at room temperature, and their exchange bias field and vertical magnetization shift are observed and exhibit a strong dependence on the content of Sr. This observed EB effect which keeps stable in BSFO ceramics at 10 K tend to vanish at room temperature with Sr concentration over 0.4.
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| 关 键 词： | multiferroic properties ferroelectric properties magnetic exchange bias ferromagnetic properties |
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