【摘要】 利用显微技术，研究了ＰＬＺＴ陶瓷的显微结构及它在外电场作用下的行为。制备粗晶粒及单个晶粒厚的抛光薄片， 利用十字形电极， 观察在电场作用下， 电畴运动的动态过程。讨论所观察到的一些晶界有关现象，如： 晶界平滑区， 晶界区的电光性， “壳－芯”结构， 析出物在晶界区的沉积， 电畴在该区的成核和生长， 空间电荷在该区的积累等等。认为存在高应变能的晶界区， 对上述现象起重要作用更多还原

【Abstract】 ELECTRONIC COMPONENTS & MATERIALS (China),Vol.18,No.5,P. 13 16 (Oct.1999).In Chinese. The microstructure of PLZT ceramics and its behaviors under electric field are investigated by microscopy technique.Large grain sized specimens,polished monograin thick slices and cross electrodes are prepared for observing the dynamic processes of domain movement.The observed phenomena are discussed such as smooth grain boundary region,different electrooptic properties of grain boundary region,core shell structure,precipitation in grain boundary region,domain nucleation from grain boundary.Presence of high strain grain boundary region plays a fundamental role in producing above phenomena.(10 refs.)更多还原