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Effects of Mn Doping on Dielectric Properties of BSTN Ceramics

Journal Key Engineering Materials (Volumes 368 - 372)
Volume High-Performance Ceramics V
Edited by Wei Pan and Jianghong Gong
Pages 72-74
DOI 10.4028/www.scientific.net/KEM.368-372.72
Citation Xin Cheng et al., 2008, Key Engineering Materials, 368-372, 72
Online since February, 2008
Authors Xin Cheng, Zong Hui Zhou
Keywords BSTN, Composite Ceramic, Dielectric Properties, Mn
Abstract

The effects of Mn doping on the phase composition and dielectric properties of (1-x)BaO·xSrO·0.7TiO2·0.3Nb2O5 (BSTN) composite ceramics was investigated. The results showed that the dielectric constants of 0.7BaO·0.3SrO·(0.7-z)TiO2·0.3Nb2O5·zMnO2 (BSTNM) composite ceramics basically decreases as the content of doped MnO2 increases at the same applied frequency, while tanδ decreases when value z≤0.01 but increases when value z>0.01. The phase transition temperature of tungsten bronze phase in BSTNM composite ceramics increases with the increase of value z.

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