The Microstructure and Properties of Ag(Nb_(0.8)Ta_(0.2))_(1-x)(Mn_(0.5)W_(0.5))_xO_3 Ceramic System  

作　　者：肖谧 

机构地区：[1]School of Electronic Information Engineering,Tianjin University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第4期735-739,共5页武汉理工大学学报（材料科学英文版）

摘　　要：The microstructure and dielectric properties of Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3（x=0,0.04,0.08,0.12,0.16） ceramic system were investigated.The Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3 ceramics were prepared by the traditional solid-state reaction method and were characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM） and Raman spectrometer.The sintering ability and dielectric properties of Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3 were found to be improved with the doping of Mn4＋ and W6＋ ions.The densification temperature of Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3 ceramics decreased from 1 080 ℃ to 1 000 ℃ when x increased from 0 to 0.16.Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3 ceramic was found to have the best dielectric properties when x=0.08,larger permittivity（■=547） and smaller dielectric loss（tan■=0.00156）.The microstructure and dielectric properties of Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3（x=0,0.04,0.08,0.12,0.16） ceramic system were investigated.The Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3 ceramics were prepared by the traditional solid-state reaction method and were characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM） and Raman spectrometer.The sintering ability and dielectric properties of Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3 were found to be improved with the doping of Mn4＋ and W6＋ ions.The densification temperature of Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3 ceramics decreased from 1 080 ℃ to 1 000 ℃ when x increased from 0 to 0.16.Ag（Nb0.8Ta0.2）1-x（Mn0.5W0.5）xO3 ceramic was found to have the best dielectric properties when x=0.08,larger permittivity（■=547） and smaller dielectric loss（tan■=0.00156）.

关 键 词：dielectric properties silver niobate tantalite MNO2 WO3 

分 类 号：TG174.1[金属学及工艺—金属表面处理]