Morphotropic phase boundary in solid solution systems of perovskite-type oxide ferroelectrics
Morphotropic phase boundary in solid solution systems of perovskite-type oxide ferroelectrics
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DOI：
10.1143/jjap.37.l985
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发表时间：
1998-08-15
期刊：
影响因子：
--
通讯作者：
Iwata, M
中科院分区：
文献类型：
--
作者：
Ishibashi, Y;Iwata, M
基于Landau型自由能函数，从理论上阐明了钙钛矿型氧化物固溶体系统中准同型相界的出现及其附近介电常数的增加的原因.介电极化率具体表示的模型参数，并发现在本模型内的准同型相界发散。
The origin of the appearance of the morphotropic phase boundary in the perovskite-type oxide solid solution systems and the increase in the dielectric susceptibilities in the vicinity of the boundary is theoretically clarified on the basis of a Landau-type free energy function. The dielectric susceptibilities are concretely expressed in terms of the model parameters, and found to diverge at the morphotropic phase boundary within the present model.