Mechanism of the Pyroelectric Response under Direct-Current Bias in La-Modified Lead Zirconate Titanate Stannate Ceramics  

作　　者：ZHANG Hong-Ling WANG Gen-Shui CHEN Xue-Feng CAO Fei DONG Xian-Lin GU Yan HE Hong-Liang LIU Yu-Sheng 张红玲;王根水;陈学锋;曹菲;董显林;谷岩;贺红亮;刘雨生(Key laboratory of Inorganic Functional Materials and Devices,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050;National Key Laboratory of Shock Wave and Detonation Physics,Institute of Fluid Physics,P.O.Box 919-102,Mianyang 621900)

机构地区：[1]Key laboratory of Inorganic Functional Materials and Devices,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050 [2]National Key Laboratory of Shock Wave and Detonation Physics,Institute of Fluid Physics,P.O.Box 919-102,Mianyang 621900

出　　处：《Chinese Physics Letters》2011年第9期237-240,共4页中国物理快报（英文版）

基　　金：by the Natural Science Associate Foundation(NSAF)of China,the Major Program for the Fundamental Research of Shanghai under Grant No 10DJ1400203;the Hundred Talents Programme of Chinese Academic of Sciences;the Shanghai Rising-Star Program(09QH1402400).

摘　　要：Dielectric and pyroelectric properties of Pb_(0.97)La_(0.02)(Zr_(0.42)Sn_(0.40)Ti_(0.18))O_(3) ceramics are investigated as functions of temperature and dc bias field.Induced and intrinsic pyroelectric coefficients pind and p0 are calculated and analyzed.It is found that the sign,value and variation of the net pyroelectric coefficient p with increasing dc bias all are dominated by p0 under applied biases.Polarization and depolarization processes under dc biases are analyzed.Besides the contribution of pind,the diffuse and decreased pyroelectric response under dc bias compared with that of an identical field poled sample without dc bias is mainly attributed to the depolarization process under dc bias.

关 键 词：CERAMICS MODIFIED attributed 

分 类 号：TB3[一般工业技术—材料科学与工程]