掺钾对PMN基陶瓷有序微区及介电和电致伸缩性能的影响  

The Effect of K^+ Doping on the Ordered Micro-region,Dielectric and Electrostrictive Properties of 0.80Pb(Mg_(1/3)Nb_(2/3))O_3-0.20PbTiO_3 Ceramics

作　　者：屈绍波[1,2] 杨祖培[3] 高峰[3] 薛锦[1] 田长生[3] 

机构地区：[1]西安交通大学 [2]空军工程大学,西安710038 [3]西北工业大学

出　　处：《材料工程》2002年第9期26-27,共2页Journal of Materials Engineering

基　　金：国家自然科学基金项目 (S0 0 0 2 0 0 9);航空基础科学基金资助项目 (99G5 3 0 88)

摘　　要：使用二次合成法制备了不同钾含量的 0 .80 Pb(Mg1 / 3Nb2 / 3) O3- 0 .2 0 Pb Ti O3陶瓷 ,首先研究了掺钾对 PMN基预烧粉体和陶瓷试样相组成的影响 ,在此基础上详细研究了掺钾对 PMN基陶瓷有序微区、介电和电致伸缩性能的影响规律。掺钾对 PMN基预烧粉体和陶瓷的相组成影响很小 ;理论计算和 Raman散射光谱分析都表明掺钾使 PMN基陶瓷的有序微区的尺寸稍微减小 ;掺钾也小幅度地减小了 PMN基陶瓷的介电和电致伸缩性能 。Pb(Mg 1/3 Nb 2/3 )O 3 0 20PbTiO 3 relaxor ceramics with various content of K + were fabricated by the columbite method and the effect of K + doping on the phase structure, ordered micro region, dielectric and electrostrictive properties was investigated The mechanism of K + doping in dielectric and electrostrictive response was explored Minor content of K + doping hardly affectes the phase structure of PMN based ceramics, however, both of theoretical calculation and Raman scattering experiment demonstrateds that K + doping decreases the size of ordered micro region slightly, K + doping also slightly decreases dielectric and electrostrictive properties

关 键 词：PMN基陶瓷 有序微区 电致伸缩性能 驰豫铁电体 钛酸铅 铷镁酸铅 掺钾 介电性能 

分 类 号：TM223[一般工业技术—材料科学与工程] TQ174.754[电气工程—电工理论与新技术]