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

doi:10.1088/1674-1056/23/9/097505

Abstract Multiferroic properties and exchange bias (EB) in Bi_1-xSr_xFeO₃ (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.

Keywords: multiferroic properties ferroelectric properties magnetic exchange bias ferromagnetic properties

Received: 17 January 2014
Revised: 28 March 2014
Accepted manuscript online:

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

Fund: 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).

Corresponding Authors: Huang Hai-Jun
E-mail: hjhuang@whut.edu.cn

Cite this article:

Ma Zheng-Zheng (马争争), Li Jian-Qing (李建青), Chen Zi-Peng (陈子鹏), Tian Zhao-Ming (田召明), Hu Xiao-Jun (胡晓军), Huang Hai-Jun (黄海军) Multiferroic properties and exchange bias in Bi_1-xSr_xFeO₃ (x=0-0.6) ceramics 2014 Chin. Phys. B 23 097505

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

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Multiferroic properties and exchange bias in Bi_1-xSr_xFeO₃ (x=0-0.6) ceramics