Domain switching and rotation in lead zirconate titanate ceramics by poling fields
Domain switching and rotation in lead zirconate titanate ceramics by poling fields
复制标题
极化场导致锆钛酸铅陶瓷中的磁畴切换和旋转
DOI：
10.1080/00150190008227955
复制
发表时间：
2000
期刊：
影响因子：
0.8
通讯作者：
T. Ogawa
中科院分区：
文献类型：
--
作者：
T. Ogawa
通过测量极化场对介电和压电性能的依赖关系，研究了软质锆钛酸铅（PZT）陶瓷与硬质锆钛酸铅（PZT）陶瓷的畴切换和旋转特性。在矫顽力场处观察到最小介电常数（fcp）和最大频率常数（fcp），它们对应于获得最小平面耦合因子所需的极化场。这些现象是由于这些场的180°畴夹紧造成的。利用最大fcp和最小fcp之间的关系估计了90°（71°或109°）域旋转的场。方形和菱形软质PZT陶瓷中，畴夹持导致的fcp最小ϵt和最大，而菱形硬质PZT陶瓷中，畴旋转导致的fcp最大ϵt和最小。认为在软质PZT中，由于陶瓷的机械柔软性，没有得到导致最大ϵt和最小fcp的畴旋转。
Abstract Domain switching and rotation in soft lead zirconate titanate (PZT) ceramics were investigated in comparison with those in hard PZT ceramics by measuring the poling field dependence of the dielectric and piezoelectric properties. The minimum dielectric constant (fcp) and maximum frequency constant (fcp) were observed at the coercive fields, which correspond to the poling fields required to obtain the minimum planar coupling factor. These phenomena were due to the 180° domain clamping at these fields. The fields of 90° (71° or 109°) domain rotation were estimated using the relationships between the maximum fcp and minimum fcp. While minimum ϵt and maximum fcp due to domain clamping were observed in the compositions of tetragonal and rhombohedral soft PZT ceramics, domain rotations which caused maximum ϵt and minimum fcp were mainly observed in rhombohedral hard PZT ceramics. It was thought that the reason why domain rotations which caused maximum ϵt and minimum fcp were not obtained in soft PZT was the mechanical softness of the ceramics.