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The doping effects of BiFe1-xCoxO3 (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 |
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Abstract Bi5Fe1-xCoxTi3O15 (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 (2Pr) reaches its greatest value of 14 μC/cm2 at x = 0.6. Remnant magnetization (2Mr) first increases and then decreases, and the greatest 2Mr 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.
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Received: 25 August 2011
Revised: 14 October 2011
Accepted manuscript online:
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PACS:
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75.50.Dd
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(Nonmetallic ferromagnetic materials)
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77.80.-e
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(Ferroelectricity and antiferroelectricity)
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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
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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 BiFe1-xCoxO3 (x=0.0-0.8) in layered perovskite Bi4Ti3O12 ceramics 2012 Chin. Phys. B 21 047502
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