Effect of the Synthesis Conditions on the Properties of Polycrystalline Films of Lead Zirconate Titanate of NonStoichiometric Composition

被引:16
作者
Afanas'ev, V. P. [1 ]
Vorotilov, K. A. [2 ]
Mukhin, N. V. [1 ]
机构
[1] St Petersburg State Electrotech Univ, Ul Prof Popova 5, St Petersburg 197376, Russia
[2] Moscow State Tech Univ Radio Engn Elect & Automat, Pr Vernadskogo 78, Moscow 119454, Russia
基金
俄罗斯基础研究基金会;
关键词
lead zirconium titanate films; grain boundaries; built-in field; oxygen and lead vacancies; FERROELECTRIC-FILMS; THIN; CRYSTALLIZATION; MICROSTRUCTURE; POLARIZATION; PHASE;
D O I
10.1134/S1087659616030020
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The model representations of the formation of the internal fields at the grain boundaries in polycrystalline lead zirconate titanate (PZT) films are discussed. According to the model proposed, the local distortion of the stoichiometric composition of the PZT films caused by the segregation of the oxygen and lead ions from the bulk PZT grains towards their boundaries during high-temperature annealing gives rise to electrical double layers near the grain boundaries and fixes the polarization in these areas. As a result, the ferro-electric polarization that can be switched by the electric field in polycrystalline PZT films decreases.
引用
收藏
页码:295 / 301
页数:7
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