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Dielectric Characteristics of Doped Strontium Titanate within Broad Temperature Range

Journal Key Engineering Materials (Volumes 336 - 338)
Volume High-Performance Ceramics IV
Edited by Wei Pan and Jianghong Gong
Pages 158-160
DOI 10.4028/www.scientific.net/KEM.336-338.158
Citation Long Tu Li et al., 2007, Key Engineering Materials, 336-338, 158
Online since April, 2007
Authors Long Tu Li, Tian Wang, Xiao Hui Wang, Jing Chang Zhao, Xian Li
Keywords Dielectric Properties, Multilayer Ceramic Capacitor (MLCC), Strontium Titanate Based Ceramics
Abstract

Dielectric characteristics of strontium titanate based ceramics doped with samarium were investigated within temperature range from –60oC to 150oC. XRD was used to identify the phase compositions of the ceramics and the microstructures were characterized by SEM. Good temperature coefficient of capacitance (TCC) was observed: TCC = +18% ~ −11% with high dielectric constant of 18000 and relative low dielectric loss. After further modification, the present ceramics might be promising candidates for the multilayer ceramic capacitors applications at high temperature.

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