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Improvement in the Microstructures and Dielectric Properties of Barium Strontium Titanate Glass–Ceramics by AlF 3 /MnO 2 Addition
Author(s) -
Chen Jichun,
Zhang Yong,
Deng Changsheng,
Dai Xiaming
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03100.x
Subject(s) - materials science , dielectric , microstructure , ceramic , dielectric loss , strontium titanate , doping , barium titanate , mineralogy , strontium , composite material , capacitor , barium , metallurgy , optoelectronics , chemistry , electrical engineering , organic chemistry , voltage , engineering
The microstructures and dielectric properties of barium strontium titanate glass–ceramics are closely related to the AlF 3 and MnO 2 additions. The grain morphology was changed by adding AlF 3 , while the dielectric loss was decreased significantly by adding MnO 2 . At the same time the breakdown strength (BDS) was improved by doping 4 mol% AlF 3 and 1 mol% MnO 2 with the glass–ceramics. The present investigation resulted in the development of glass–ceramic compositions with high dielectric BDS and low dielectric loss for high energy density capacitor applications.