Structural and Raman spectroscopic studies of poled lead-free piezoelectric sodium bismuth titanate ceramics

被引：31
|
作者：
Ruth, D. E. Jain [1 ]
Sundarakannan, B. [1 ]
机构：
[1] Manonmaniam Sundaranar Univ, Dept Phys, Tirunelveli 627012, Tamil Nadu, India
来源：
CERAMICS INTERNATIONAL | 2016年 / 42卷 / 04期
关键词：
Powders: solid state reaction; Spectroscopy; Perovskites; PHASE-TRANSITIONS;
D O I：
10.1016/j.ceramint.2015.11.162
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：
Lead-free piezoelectric sodium bismuth titanate (NBT) ceramics are synthesized by a solid state reaction method. Poled NBT ceramics possess rhombohedral R3c structure. Vibrational phonon frequencies associated to Bi-O, Na-O, TiO6 octahedra and oxygen vibrations are observed. Experimentally unreported lowest frequency region peak centered at 111 cm(-1) is assigned to E(TO1) mode related to Bi-O vibrations. Appearance of lowest frequency mode may be due to well-polished surfaces with reduced Rayleigh scattering background and well-defined ordering of Bi and Na ions in the lattice. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：4775 / 4778
页数：4
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