The doping effects of BiFe1-xCoxO3 (x=0.0-0.8) in layered perovskite Bi4Ti3O12 ceramics

doi:10.1088/1674-1056/21/4/047502

中国物理B ›› 2012, Vol. 21 ›› Issue (4): 47502-047502.doi: 10.1088/1674-1056/21/4/047502

杨文露,陈春燕,毛翔宇,陈小兵

收稿日期:2011-08-25 修回日期:2011-10-14 出版日期:2012-02-29 发布日期:2012-02-29
通讯作者: 陈小兵,xbchen@yzu.edu.cn E-mail:xbchen@yzu.edu.cn

The doping effects of BiFe_1-xCo_xO₃ (x=0.0-0.8) in layered perovskite Bi₄Ti₃O₁₂ ceramics

Yang Wen-Lu(杨文露), Chen Chun-Yan(陈春燕), Mao Xiang-Yu(毛翔宇), and Chen Xiao-Bing(陈小兵)^†

College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China

Received:2011-08-25 Revised:2011-10-14 Online:2012-02-29 Published:2012-02-29
Contact: Chen Xiao-Bing,xbchen@yzu.edu.cn E-mail:xbchen@yzu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 51072177) and the Science Foundation of Jiangsu Provincial Department of Education, China (Grant No. 08KJB140011).

摘要/Abstract

Abstract: Bi₅Fe_1-xCo_xTi₃O₁₅ (x= 0.0, 0.2, 0.4, 0.5, 0.6, and 0.8) multiferroic ceramics are synthesized in two steps using the solid state reaction technique. X-ray diffraction patterns show that the samples have four-layer Aurivillius phases. At room temperature (RT), the samples each present a remarkable coexistence of ferromagnetism (FM) and ferroelectricity (FE). The remnant polarization (2P_r) reaches its greatest value of 14 μC/cm² at x = 0.6. Remnant magnetization (2M_r) first increases and then decreases, and the greatest 2M_r is 7.8 menu/g when x= 0.5. The magnetic properties for x = 0.4 are similar to those for x= 0.6, indicating that the magnetic properties originate mainly from the coupling between Fe³⁺ and Co³⁺ ions, rather than from their own magnetic moments.

Key words: multiferroic, ferromagnetism, ferroelectricity

中图分类号: (Nonmetallic ferromagnetic materials)

75.50.Dd

77.80.-e (Ferroelectricity and antiferroelectricity)

杨文露, 陈春燕, 毛翔宇, 陈小兵. [J]. 中国物理B, 2012, 21(4): 47502-047502.

Yang Wen-Lu(杨文露), Chen Chun-Yan(陈春燕), Mao Xiang-Yu(毛翔宇), and Chen Xiao-Bing(陈小兵) . The doping effects of BiFe_1-xCo_xO₃ (x=0.0-0.8) in layered perovskite Bi₄Ti₃O₁₂ ceramics[J]. Chin. Phys. B, 2012, 21(4): 47502-047502.

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The doping effects of BiFe_1-xCo_xO₃ (x=0.0-0.8) in layered perovskite Bi₄Ti₃O₁₂ ceramics

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