Theory of the morphotropic phase boundary
Theory of the morphotropic phase boundary
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同形相界理论
DOI：
10.1080/00150190108008570
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发表时间：
2001
期刊：
影响因子：
0.8
通讯作者：
Y. Ishibashi
中科院分区：
文献类型：
--
作者：
Y. Ishibashi
从理论上研究了组成在准同向相界附近的材料的物理性质。在那里，热力学势变得不那么各向异性，因此，即使是平衡稳定状态也很容易变得不稳定，不受横向涨落的影响。这意味着横向介电常数和与对称性相关的弹性柔度常数变得很大，机电耦合常数也增加了。矫顽场可能会变得非常小。
Abstract Physical properties of the materials whose composition is in the vicinity of the morphotropic phase boundary are theoretically studied. There the thermodynamic potential becomes less anisotropic, and therefore even the equilibrium stable state may easily become unstable against transversal fluctuations. This means that the transversal dielectric constants and the symmetry related elastic compliance constants become very large, and the electro-mechanical coupling constant also increases. The coercive field may become extremely small.