Effect of alkaline earth oxides on dielectric properties of polycrystalline BaTi2O5 prepared by arc melting

Xinyan Yue, Rong Tu, Takashi Goto, Hongqiang Ru

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Dielectric properties of SrO, CaO and MgO substituted BaTi 2O5, Ba1-xAxTi2O 5 (A = Sr, Ca and Mg) prepared by arc melting were investigated. The lattice parameters of Ba1-xAxTi2O5 showed different changes depended on the increase of SrO, CaO and MgO substitutions. Ba1-xAxTi2O5 showed a significant b-axis orientation of (010). The Curie temperature of SrO and CaO substituted BaTi2O decreased from 750 to 703 and 685 K with increasing x up to 0.10, respectively, whereas that of MgO substituted BaTi 2O5 decreased to 666 K with increasing x only to 0.01. The permittivity of Ba1xSrxTi2O5 and Ba1-xCax-Ti2O5 showed a sharp peak at Curie temperature while that of Ba1-xMgxTi 2O5 showed a flat peak at x ≥ 0.03. The maximum permittivity of Ba1-xSrxTi2O5, Ba1-xCaxTi2O5 and Ba 1-xMgxTi2O5 showed the highest values of 3300, 4950 and 3250 at x = 0.01, 0.03 and 0.005, respectively.

Original languageEnglish
Title of host publicationCeramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp.
PublisherAmerican Ceramic Society
Pages485-491
Number of pages7
ISBN (Print)9780470408421
DOIs
Publication statusPublished - 2010
EventCeramic Materials and Components for Energy and Environmental Applications - 9th International Symposium on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symposium - Shanghai, China
Duration: 2008 Nov 102008 Nov 14

Publication series

NameCeramic Transactions
Volume210
ISSN (Print)1042-1122

Other

OtherCeramic Materials and Components for Energy and Environmental Applications - 9th International Symposium on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symposium
Country/TerritoryChina
CityShanghai
Period08/11/1008/11/14

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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