Authors: Xiujuan Zhou Changrong Zhou Qin Zhou Huabin Yang Zhenyong Cen Jun Cheng Lei Cao Qiaolan Fan
Publish Date: 2014/01/04
Volume: 43, Issue: 3, Pages: 755-760
Abstract
Bsite complex ion Mg1/3Nb2/3modified hightemperature ceramics 071BiFeO3029BaTi1−x Mg1/3Nb2/3 x O3 BFBTMNx have been fabricated by the conventional solidstate reaction method The compositional dependence of the␣phase structure electrical properties and depolarization temperature of the ceramics was studied The main phase structure of BFBTMNx ceramics is perovskite phase with pseudocubic symmetry The experimental results show that the dielectric and piezoelectric properties and temperature stability strongly depend on the Mg1/3Nb2/34+ content The optimum Mg1/3Nb2/3 content enhances the piezoelectric properties Curie temperature and depolarization temperature The ceramic with x = 1 exhibited enhanced electrical properties of d 33 = 158 pC/N and k p = 0322 combined with hightemperature stability with Curie temperature of T c = 453°C and depolarization temperature of T d = 400°C These results show that the ceramic with x = 1 is a promising leadfree hightemperature piezoelectric materialThis work was supported by the National Nature Science Foundation of China 61361007 61261012 and 11364008 Guangxi Education Department Foundation 201012MS083 Guangxi Key Laboratory of Information Materials 1210908206Z and 1210908222Z and Guangxi Experiment Center of Information Science Foundation 20130316
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