Raman Studies on Structure Transitions of Layered Ferroelectrics Ba_(2+x)Bi_(4-x)Ti_(5-x)Nb_(x)O_(18)

作     者：HAN Jie ZOU Guang-tian CUI Qi-liang YANG Hai-bin CUI Tian 韩杰;邹广田;崔启良;杨海滨;崔田

作者机构：National Laboratory of Superhard MaterialsJilin UniversityChangchun 130023 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：1998年第15卷第6期

页      面：438-440页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：Supported by the National Doctoral Foundation of the China Education Commission under Grant No.96018307 

主　　题：method Transition 

摘      要：Raman spectra of layered ferroelectrics Ba_(2+x)Bi_(4-x)Ti_(5-x)Nb_(x)O_(18)(0≤x≤2)at room temperature in the range 20-1000cm^(-1) were *** modes were assigned with the use of internal mode *** doping-induced structure phase transitions were observed at about x=0.50 and x=1.25,*** spectra variations were analyzed according to the selection rules of BO_(6) octahedra in various *** samples were synthesized by solid state reaction method.