›› 2014, Vol. 23 ›› Issue (9): 97505-097505.doi: 10.1088/1674-1056/23/9/097505

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

Multiferroic properties and exchange bias in Bi1-xSrxFeO3 (x=0-0.6) ceramics

马争争a, 李建青a, 陈子鹏a, 田召明b, 胡晓军a, 黄海军a   

  1. a Wuhan University of Technology, Wuhan 430070, China;
    b Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2014-01-17 修回日期:2014-03-28 出版日期:2014-09-15 发布日期:2014-09-15
  • 基金资助:
    Project 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), and the National Science Fund for Excellent Young Scholars of China (Grant No. 41074056).

Multiferroic properties and exchange bias in Bi1-xSrxFeO3 (x=0-0.6) ceramics

Ma Zheng-Zheng (马争争)a, Li Jian-Qing (李建青)a, Chen Zi-Peng (陈子鹏)a, Tian Zhao-Ming (田召明)b, Hu Xiao-Jun (胡晓军)a, Huang Hai-Jun (黄海军)a   

  1. a Wuhan University of Technology, Wuhan 430070, China;
    b Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2014-01-17 Revised:2014-03-28 Online:2014-09-15 Published:2014-09-15
  • Contact: Huang Hai-Jun E-mail:hjhuang@whut.edu.cn
  • Supported by:
    Project 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), and the National Science Fund for Excellent Young Scholars of China (Grant No. 41074056).

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.

关键词: multiferroic properties, ferroelectric properties, magnetic exchange bias, ferromagnetic properties

Abstract: 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.

Key words: multiferroic properties, ferroelectric properties, magnetic exchange bias, ferromagnetic properties

中图分类号:  (Magnetomechanical effects, magnetostriction)

  • 75.80.+q
75.85.+t (Magnetoelectric effects, multiferroics) 77.84.-s (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)