Phase transition and temperature stability of piezoelectric properties in Mn-modified Pb(Mg1/3Nb2/3)O3-PbZrO3-PbTiO3 ceramics

被引：19

作者：

Yan, Yongke ^{[1
]}

Kumar, Ashok ^{[2
,3
]}

Correa, Margarita ^{[2
,3
]}

Cho, Kyung-Hoon ^{[1
]}

Katiyar, R. S. ^{[2
,3
]}

Priya, Shashank ^{[1
]}

机构：

[1] Virginia Tech, BMDL, CEHMS, Blacksburg, VA 24061 USA

[2] Univ Puerto Rico, Dept Phys, San Juan, PR 00931 USA

[3] Univ Puerto Rico, Inst Funct Nanomat, San Juan, PR 00931 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 15期

基金：

美国国家科学基金会;

关键词：

Piezoelectricity - Ceramic materials - Lead titanate - Manganese oxide;

D O I：

10.1063/1.3703124

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This study investigates the effect of two different Mn modifiers [MnO2 and Pb(Mn1/3Nb2/3)O-3(PMnN)] on the of phase transitions in Pb(Mg1/3Nb2/3)O-3-PbZrO3-PbTiO3 ceramics. The temperature dependence of polarization derived from measured pyroelectric current indicated change in nature of phase transition with MnO2 doping. This phenomenon was supported by the temperature evolution of the linear softening of low lying hard lattice mode as revealed by Raman analysis. The grain size was found to increase with MnO2 doping (5X) while decrease with PMnN modification (0.5X). Interestingly, the piezoelectric constant of MnO2 modified composition showed negligible degradation (<1%) even after heat treatment very close to the ferroelectric-paraelectric transition temperature. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3703124]

引用

页数：4

共 18 条

[1] Phonon anomalies and phonon-spin coupling in oriented PbFe0.5Nb0.5O3 thin films [J].