常温高性能PMN-PMS-PZT热释电材料  

High pyroelectric properties of PMN-PMS-PZT pyroelectric ceramics

作　　者：任伏龙[1] 曾亦可[1] 姜胜林[1] 易飞[1] 

机构地区：[1]华中科技大学电子科学与技术,武汉430074

出　　处：《功能材料与器件学报》2008年第4期827-830,共4页Journal of Functional Materials and Devices

基　　金：新世纪优秀人才支持计划(No.NCET-04-0703);华中科技大学研究生创新基金(No.HF04132006185)

摘　　要：研究了组分改变对PMN-PMS-PZT(铌锰酸铅?锑锰酸铅?锆钛酸铅)热释电陶瓷材料的相组成、介电性能、热释电性能等方面的影响,并对实验结果进行了分析。实验结果表明:通过改变材料Zr/Ti的比例,在陶瓷介电常数rε和介电损耗tanδ变化不大的情况下,使得热释电系数的峰值向室温附近移动;在Zr/Ti=95/5时,常温(28℃)下介电常数εr=228.5、介电损耗tanδ=0.23%,热释电系数p=25.5×10-4C/m2℃,探测率优值FD=47.3×10-5Pa-1/2,此类材料符合制作热释电红外探测器的要求。The effect of constitute change on the phase composition, dielectric properties and pyroelectric properties of PMN - PMS - PZT ceramics was investigated in details, and the results of experiments was explained. The results show that the change of constitute increases the pyroelectric coefficient of PMN - PMS - PZT but the dielectric constant and dielectric loss are not sharply changed ; Ferroelectric hysteresis loop appeares constriction, but this vanishes when the voltage effects on it;when Zr/Ti is 95/5 in normal temperature（28℃ ）, εr =228.5 ,tang =0.23% ,p =25.5 × 10^-4C/m^2℃ and FD =47.3 × 10^-5Pa^-1/2. These parameters have already answered for the demand of making pyroelectric infrared detection.

关 键 词：PMN-PMS-PZT 介电性能 热释电性能 

分 类 号：TB308[一般工业技术—材料科学与工程]