Effect of Zn/Si ratio on the microstructural and microwave dielectric properties of Zn2SiO4 ceramics

Ngoc Huan Nguyen, Jong Bong Lim, Sahn Nahm, Jong Hoo Paik, Jong Hee Kim

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)

Abstract

Zn2SiO4 ceramics synthesized by the conventional solid-state method exhibited a low Q × f value, possibly due to the formation of a ZnO second phase. However, with a small ZnO reduction from the Zn2SiO4 ceramics, the ZnO second phase disappeared and grain growth occurred due to the formation of a Si-rich liquid phase. Specimens with a large grain size exhibited an improved Q × f value. In particular, the ceramics with nominal composition Zn1.8SiO3.8 sintered at 1300°C exhibited improved microwave dielectric properties of εr=6.6, Q × f=147 000 GHz, and τf=-22 ppm/°C.

Original languageEnglish
Pages (from-to)3127-3130
Number of pages4
JournalJournal of the American Ceramic Society
Volume90
Issue number10
DOIs
Publication statusPublished - 2007 Oct

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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