Analytical saturated domain orientation textures and electromechanical properties of ferroelectric ceramics due to electric/mechanical poling
Analytical saturated domain orientation textures and electromechanical properties of ferroelectric ceramics due to electric/mechanical poling
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DOI：
10.1063/1.2645889
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发表时间：
2007-03
影响因子：
3.2
通讯作者：
Faxin Li;R. Rajapakse
中科院分区：
文献类型：
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作者：
Faxin Li;R. Rajapakse
本文解析地研究了三种伪立方体(四方、菱面体和正交体)铁电陶瓷在完全电极化和单轴拉伸(压缩)极化后的饱和磁畴取向织构。从极化场在赤平投影上相对于固定微晶坐标的均匀逆极图显式导出了磁区极矢量的一维取向分布函数(ODF)。利用解析ODF得到了电/机械极化后的饱和极化和应变的解析解。基于饱和磁畴取向织构的闭合形式解，得到了铁电陶瓷的本征机电性能，它仅依赖于ODF和相应单晶的性质。结果表明，铁电晶体的宏观对称性从4 mm(四方)、3m(菱面体)和mm2(正交体)变化。
Saturated domain orientation textures of three types of pseudocubic (tetragonal, rhombohedral, and orthorhombic) ferroelectric ceramics after complete electric and uniaxial tension (compression) poling is studied analytically in this paper. A one-dimensional orientation distribution function (ODF) of the domain polar vectors is explicitly derived from the uniform inverse pole figures of the poling field axes on a stereographic projection with respect to the fixed crystallite coordinates. The analytical ODF is used to obtain the analytical solutions of saturated polarization and strain after electric/mechanical poling. Based on the closed form solution of the saturated domain orientation textures, the resultant intrinsic electromechanical properties of ferroelectric ceramics, which depend only on the ODF and properties of the corresponding single crystals, are obtained. The results show how the macroscopic symmetries of ferroelectric crystals change from 4mm (tetragonal), 3m (rhombohedral), and mm2 (orthor...