Elastic, dielectric, and piezoelectric anomalies and Raman spectroscopy of 0.5Ba(Ti0.8Zr0.2)O3-0.5(Ba0.7Ca0.3)TiO3

被引：155

作者：

Damjanovic, Dragan ^{[1
]}

Biancoli, Alberto ^{[1
]}

Batooli, Leili ^{[1
]}

Vahabzadeh, Amirhossein ^{[1
]}

Trodahl, Joe ^{[2
]}

机构：

[1] Swiss Fed Inst Technol Lausanne EPFL, Ceram Lab, CH-1015 Lausanne, Switzerland

[2] Victoria Univ, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington, New Zealand

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 19期

关键词：

BARIUM-TITANATE; SINGLE-CRYSTALS; CERAMICS; MOTION;

D O I：

10.1063/1.4714703

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The solid solution 0.5Ba(Ti0.8Zr0.2)O-3-0.5(Ba0.7Ca0.3)TiO3 (BCZT) is a promising lead-free piezoelectric material with exceptionally high piezoelectric coefficients. The strong response is related to structural instabilities close to ambient temperature. We report here on temperature-induced anomalies in the dielectric, piezoelectric, and elastic coefficients and Raman spectroscopy of ceramic BCZT. The data indicate ferroelectric-ferroelectric structural phase transitions in this material in addition to those previously reported. An anomaly is also observed above the Curie temperature T-C and is associated with the loss of polar structure that persists thirty degrees above T-C. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4714703]

引用

页数：4

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