Magnetocapacitance effect in multiferroic BiMnO3 -: art. no. 180401
Magnetocapacitance effect in multiferroic BiMnO3 -: art. no. 180401
复制标题
DOI：
10.1103/physrevb.67.180401
复制
发表时间：
2003-05-01
影响因子：
3.7
通讯作者：
Tokura, Y
中科院分区：
文献类型：
--
作者：
Kimura, T;Kawamoto, S;Tokura, Y
我们研究了具有高度扭曲的钙钛矿结构的铁磁BiMnO 3的结构、磁性和电学性质。在T-E=750-770 K时，体系发生了从中心对称到非中心对称的结构转变，这一转变描述了体系的铁电性。介电常数的变化是由磁有序（T（M）约为100 K）以及在T-M附近施加磁场引起的。这些特征归因于多铁性系统中铁电序和铁磁序之间的内在耦合。
We have investigated the structural, magnetic, and electric properties of ferromagnetic BiMnO3 with a highly distorted perovskite structure. At T-E=750-770 K, a centrosymmetric-to-non-centrosymmetric structural transition takes place, which describes of the ferroelectricity in the system. The changes in the dielectric constant were induced by the magnetic ordering (T(M)approximate to100 K) as well as by the application of magnetic fields near T-M. These features are attributed to the inherent coupling between the ferroelectric and ferromagnetic orders in the multiferroic system.