异价离子替位对PZN－PT系铁电陶瓷结构稳定性的影响

The Effcct of the Heterovalent Substitution on the Perovkite Structure Stability of PZN PT Ferroelectric Ceramic

本文详细研究了异价离子（Ｋ￣＋，Ｌａ￣（３＋））替位对ＰＺＮ－ＰＴ系铁电陶瓷结构稳定性的影响，结果表明，Ｋ￣＋离子的引入有利于钙钛矿结构的稳定，而Ｌａ￣（３＋）离子的引入不利于钙钛矿结构的稳定。

The eHect of the heterovalent(K￣+and La￣(3+))substitution on the perovskite structurestability of PZN-PT ferroelectric ceramic is carefully studied.The results show that the substi-tution of K￣+ for Pb￣(2+)helps stabilize the perovskite structure and the substitution of La￣(3+)for Pb￣(2+)doesn′t.