Direct-current field dependence of dielectric properties in alumina-doped barium strontium titanate

Long Wu, Yih Chien Chen, Cheng Liang Huang, Yi Ping Chou, Yuan Tu Tsai

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The dielectric properties of (Ba0.6Sr0.4)TiO3 and Al2O3-doped (Ba0.6Sr0.4)TiO3 have been characterized. The grain size of the specimen is maximum for (Ba0.6Sr0.4)TiO3 that has been doped with 1 wt% Al2O3. The density and the real part of the relative dielectric constant each decrease as the Al2O3 content increases. The loss factor is minimum for (Ba0.6Sr0.4)TiO3 that has been doped with 2 wt% Al2O3. The dielectric constant of the specimens decreases as the applied dc field increases. The influence of the dc field on the loss factor is much less than that on the dielectric constant. The tunability is approx. 24% for (Ba0.6Sr0.4)TiO3 that has been doped with 1 wt% Al2O3.

Original languageEnglish
Pages (from-to)1713-1719
Number of pages7
JournalJournal of the American Ceramic Society
Volume83
Issue number7
DOIs
Publication statusPublished - 2000 Jan 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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