Microstructure and microwave dielectric properties of Bi 12SiO 20 ceramics

Byoung Jik Jeong, Mi Ri Joung, Sang Hyo Kweon, Jin Seong Kim, Sahn Nahm, Ji Won Choi, Seong Ju Hwang

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12 Citations (Scopus)


Bi 12SiO 20 ceramics were well sintered at 800°C after calcination at 700°C. A liquid phase of composition Bi 2O 3 was formed during the sintering at temperatures ≥800°C and assisted the densification of the Bi 12SiO 20 ceramics. When the sintering temperature exceeded 800°C, however, the relative density, ε r, and Q × f values of the Bi 12SiO 20 ceramics decreased, probably due to the formation of a large amount of the liquid phase. The Bi 12SiO 20 ceramics sintered at 800°C for 5.0 h exhibited excellent microwave dielectric properties with a high ε r of 43, a high Q × f of 86,802 GHz and a small τ f of -10.39 ppm/°C.

Original languageEnglish
Pages (from-to)4510-4513
Number of pages4
JournalMaterials Research Bulletin
Issue number12
Publication statusPublished - 2012 Dec


  • A. Ceramics
  • A. Oxides
  • D. Dielectric properties
  • D. Microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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