Synthesis and microwave dielectric properties of Bi4(SiO 4)3 ceramics

Jin Seong Kim, Mi Ri Joung, Myung Eun Song, Sahn Nahm, Jong Hoo Paik, Byung Hyun Choi, Soon Jae Yoo

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Bi4(SiO4)3 ceramics were synthesized and their microwave dielectric properties were investigated. The Bi 12SiO20 second phase was formed at approximately 400°C, while the Bi2O2SiO3 and Bi 4(SiO4)3 phases started to form at 600°C. The amount of the Bi12SiO20 and Bi2O 2SiO3 second phases decreased as the firing temperature exceeded 650°C. A homogeneous Bi4(SiO4)3 phase was obtained for the specimen fired at 850°C. For the specimens sintered at 900°C for more than 5 h, high-density Bi4(SiO 4)3 ceramics were obtained. In particular, the Bi 4(SiO4)3 ceramics sintered at 900°C for 8 h exhibited the good microwave dielectric properties of εr=14.9, Q × f=36 101 GHz and τf=-9.42 ppm/°C.

Original languageEnglish
Pages (from-to)3461-3464
Number of pages4
JournalJournal of the American Ceramic Society
Volume91
Issue number10
DOIs
Publication statusPublished - 2008 Oct

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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