Structure property relations in BiFeO3/BaTiO3 solid solutions
Structure property relations in BiFeO3/BaTiO3 solid solutions
复制标题
DOI：
10.1063/1.371953
复制
发表时间：
2000-01-15
影响因子：
3.2
通讯作者：
Suryanarayana, SV
中科院分区：
文献类型：
--
作者：
Kumar, MM;Srinivas, A;Suryanarayana, SV
BiFeO 3与BaTiO 3形成固溶体时，在整个组成范围内显示出结构转变。高于70摩尔%的BiFeO 3的结构是菱面体，低于4摩尔%，它是四面体。中间的结构是立方体。铁电体的T-C随着BaTiO 3组分的增加而降低，并且观察到相对小的弛豫。阻抗测量显示出结构依赖性，并且对其的分析清楚地表明，观察到的电容来自样品的大部分。使用中间组合物的弛豫时间估计BiFeO 3的弛豫时间（τ）。磁化强度测量表明，场致铁磁性。随着BaTiO 3浓度的增加，结构变得立方，顺磁性开始，正如电子自旋共振谱所证明的那样。(C)2000年美国物理学会。[S0021-8979（00）06501-4]。
BiFeO3, when forming a solid solution with BaTiO3, shows structural transformations over the entire compositional range. Above 70 mole % of BiFeO3 the structure is rhombohedral and below 4 mole %, it is tetragonal. In between the structure is cubic. The ferroelectric T-C decreases with increasing composition of BaTiO3 and a relatively small relaxation is observed. Impedance measurements showed a structural dependence and analysis of which has clearly shown that the capacitance observed is from the bulk of the sample. Relaxation time (tau) of BiFeO3 was estimated using the relaxation times of the intermediate compositions. Magnetization measurements showed field induced ferromagnetism. As the structure becomes cubic with increasing concentration of BaTiO3, paramagnetism sets in, as evidenced by the electron spin resonance spectra. (C) 2000 American Institute of Physics. [S0021-8979(00)06501-4].