Rare earth doped CaCu_3Ti_4O_(12) electronic ceramics for high frequency applications期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Rare earth doped CaCu_3Ti_4O_(12) electronic ceramics for high frequency applications

Authors:	MU Chunhong ZHANG Huaiwu LIU Yingli SONG Yuanqiang LIU Peng

Affiliation:	State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China School of Physics and Information Technology Shaanxi Normal University

Abstract:	Ca1-xRxCu3Ti4O12(R=La,Y,Gd;x=0,0.1,0.2,0.3) electronic ceramics were fabricated by conventional solid-state reaction method.The microstructure and dielectric properties as well as impedance behavior were carefully investigated.XRD results showed that the secondary phases with the general formula R2Ti2O7 existed at grain boundaries of rare earth doped ceramics,which inhibited abnormal grain growth.The dielectric constant decreased from 4×105 in pure CaCu3Ti4O12(CCTO) ceramics to 2×103 with rare earth doping....

Keywords:	CaCu3Ti4O12 dielectric relaxation electronic ceramics LTCC devices rare earth ions doping
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