Structural and Multiferroic Properties of BiFe0.5Co0.5O3 Ceramics
The crystal and magnetic structure of polycrystalline BiFe0.5Co0.5O3 prepared by a solid-state reaction method with multiple calcination. The sample are characterized by using various techniques: X-ray diffraction (XRD) study is carried out for phase determination and lattice parameter calculations (α=10:1812(4)). The ferroelectricity of the samples has been confirmed by the hysteresis loops measurement but the leakage current is quite large, implying that Co substitution has no effect of the improvement on ferroelectricity in BiFe0.5Co0.5O3 samples. The magnetization measurement performed at room temperature showed a perfect hysteresis loop with large remnant magnetization (Mr≈0.55 emμ/g) and low coercive field (Hc≈197 Oe). The frequency dependence of admittance (Y′) at room temperature turn out a resonance curve centered at f～12.6MHz and a negative overshoot as a typical of resonancelike behavior. The dielectric property of the BiFe0.5Co0.5O3 ceramics were investigated at intermediate frequencies (102～106 Hz) in the temperature rage of 100～560℃.
Hai-Xia Lu Xiang-Yu Mao Wei Wang Xiao-Bing Chen
College of Physics Science and Technology,Yangzhou University,Yangzhou 225002,China
国际会议
Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)
杭州
英文
1-4
2008-03-24（万方平台首次上网日期，不代表论文的发表时间）