Poling Field Dependence of Ferroelectric Properties and Crystal Orientation in Rhombohedral Lead Zirconate Titanate Ceramics
Poling Field Dependence of Ferroelectric Properties and Crystal Orientation in Rhombohedral Lead Zirconate Titanate Ceramics
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菱面体锆钛酸铅陶瓷中铁电性能和晶体取向的极化场依赖性
DOI：
10.1143/jjap.37.5241
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发表时间：
1998
影响因子：
1.5
通讯作者：
Koji Nakamura
中科院分区：
文献类型：
--
作者：
T. Ogawa;Koji Nakamura
对菱面体锆钛酸铅（PZT）陶瓷进行了静态和动态测试，研究了电畴结构与电性能之间的关系。作为一个静态评估的极化电场的依赖性的电性能和晶体取向进行了研究。当极化电场为± 0.5kV/mm、± 1.0kV/mm、± 0.5kV/mm和± 0.75kV/mm时，样品的介电常数最大，平面耦合系数最小，X射线衍射（222）峰的频率常数和相对强度最小。由于180°畴变是影响耦合因子的主要因素，因此认为电畴夹持发生在±1.0 kV/mm。此外，通过高压测试系统测量施加到陶瓷上的重复电压脉冲的响应作为动态评估。从这些评估中，我们可以澄清180°畴、71°和109°畴旋转的切换和箝位的畴行为以及畴取向上的瞬态现象。
Rhombohedral lead zirconate titanate (PZT) ceramics were evaluated statically and dynamically to examine the relationship between domain structures and electrical properties. The poling field dependence of the electrical properties and crystal orientation was investigated as a statical evaluation. When the poling field was varied, maximum dielectric constant, minimum planar coupling factor, minimum frequency constant and minimum relative intensity of the X-ray diffraction (222) peak were obtained at the poling fields of ±0.5, ±1.0, ±0.5 and ±0.75 kV/mm, respectively. Since 180° domain switching was the dominant factor affecting the coupling factor, it was thought that the electrical domain clamping occurred at ±1.0 kV/mm. Furthermore, responses to repeated voltage pulses applied to the ceramics were measured by a high voltage test system as a dynamical evaluation. From these evaluations, we could clarify the domain behavior for the switching and clamping of 180° domain, 71° and 109° domain rotations and transient phenomena on the domain orientation.