A phenomenological thermodynamic potential for BaTiO3 single crystals -: art. no. 064101
A phenomenological thermodynamic potential for BaTiO3 single crystals -: art. no. 064101
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DOI：
10.1063/1.2042528
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发表时间：
2005-09-15
影响因子：
3.2
通讯作者：
Chen, LQ
中科院分区：
文献类型：
--
作者：
Li, YL;Cross, LE;Chen, LQ
基于BaTiO 3单晶体的性质，建立了一个唯象热力学势函数。采用Landau-Devonshire展开的八阶多项式。它再现体属性，包括三种可能的铁电转变温度和它们对电场的依赖性，以及介电常数和压电常数。与已有的热力学势不同，该势适用于预测BaTiO 3薄膜在大压应力下的铁电相变和性质。(c)2005年美国物理学会。
A phenomenological thermodynamic potential was constructed based on the properties of bulk BaTiO3 single crystals. An eighth-order polynomial of Landau-Devonshire expansion was employed. It reproduces bulk properties including the three possible ferroelectric transition temperatures and their dependence on electric fields, as well as the dielectric and piezoelectric constants. Different from the existing thermodynamic potential, it is applicable to predicting the ferroelectric phase transitions and properties of BaTiO3 thin films under large compressive biaxial strains. (c) 2005 American Institute of Physics.