Low-frequency modes of KDP-type crystals and transition mechanism
Low-frequency modes of KDP-type crystals and transition mechanism
复制标题
KDP型晶体的低频模式及跃迁机制
DOI：
10.1080/00150199408017653
复制
发表时间：
1994
期刊：
影响因子：
0.8
通讯作者：
Shik Shin
中科院分区：
文献类型：
--
作者：
Y. Tominaga;A. Agui;Shik Shin
摘要通过对包含弛豫模的介电函数因式分解形式的拟合，用局域畸变的PO_4四面体有序-无序模型解释了KDP型晶体铁电相变的动力学机制。从这个分析没有软模式出现，但临界放缓的松弛模式发生向转变温度。
Abstract The dynamical mechanism of ferroelectric phase transition in KDP-type crystals has been explained by the order-disorder model of locally distorted PO4 tetrahedrons through fitting of the factorized form of dielectric function including the relaxation mode. From this analysis no soft mode appears but the critical slowing down of the relaxation mode occurs toward to the transition temperature.