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

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

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.

Keywords: multiferroic ferromagnetism ferroelectricity

Received: 25 August 2011
Revised: 14 October 2011
Accepted manuscript online:

PACS:	75.50.Dd	(Nonmetallic ferromagnetic materials)
	77.80.-e	(Ferroelectricity and antiferroelectricity)

Fund: 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).

Corresponding Authors: Chen Xiao-Bing,xbchen@yzu.edu.cn
E-mail: xbchen@yzu.edu.cn

Cite this article:

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 2012 Chin. Phys. B 21 047502

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

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