Poling Field Dependence of Crystal Orientation and Ferroelectric Properties in Lead Titanate Ceramics
Poling Field Dependence of Crystal Orientation and Ferroelectric Properties in Lead Titanate Ceramics
复制标题
钛酸铅陶瓷中晶体取向和铁电性能的极化场依赖性
DOI：
10.1143/jjap.39.5538
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发表时间：
2000
影响因子：
1.5
通讯作者：
T. Ogawa
中科院分区：
文献类型：
--
作者：
T. Ogawa
通过研究极化电场对X射线衍射（002）峰相对强度和电学性能的影响，研究了钛酸铅陶瓷中的畴反转和旋转。虽然钛酸铅陶瓷表面通过极化场在c轴方向上高度取向，但是由于晶体结构的大的各向异性，很难对准陶瓷块体的晶体取向。畴钳位的平面耦合因子和矫顽场的介电常数的影响，在钛酸铅陶瓷，以及在软，硬的四相锆钛酸铅陶瓷的情况下被证实。在钛酸铅陶瓷中没有观察到由于畴夹持引起的频率常数的峰值。此外，有人认为，域旋转发生在需要获得最小频率常数的字段。
Domain switching and rotation in lead titanate ceramics were evaluated by investigating the poling field dependence of the relative intensity of the X-ray diffraction (002) peak and the electrical properties. Although the lead titanate ceramic surface was highly oriented in the direction of the c-axis by the poling field, it was difficult to align the crystal orientation of the ceramic bulk because of the large anisotropy of the crystal structure. The effect of domain clamping on the planar coupling factor and dielectric constant at coercive fields was confirmed in lead titanate ceramics as well as in the case of soft and hard tetragonal lead zirconate titanate ceramics. The peaks of frequency constant due to domain clamping were not observed in lead titanate ceramics. Further, it was thought that domain rotations occurred at the fields required to obtain the minimum frequency constant.