Synthesis and microwave dielectric properties of Re3Ga 5O12 (Re: Nd, Sm, Eu, Dy, Yb, and Y) ceramics

Jae Chul Kim, Min Han Kim, Jong Bong Lim, Sahn Nahm, Jong Hoo Paik, Jong Hee Kim

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65 Citations (Scopus)


Re3Ga5O12 (Re: Nd, Sm, Eu, Dy, Yb, and Y) garnet ceramics were synthesized and their microwave dielectric properties were investigated for advanced substrate materials in microwave integrated circuits. The Re3Ga5O12 ceramics sintered at 1350°-1500°C had a high-quality factor (Q × f) ranging from 40 000 to 192173 GHz and a low-dielectric constant (εr) of between 11.5 and 12.5. They also exhibited a relatively stable temperature coefficient of resonant frequency (τf) in the range of -33.7 to - 12.4 ppm/°C. In particular, the Sm3Ga5O12 ceramics sintered at 1450°C exhibited good microwave dielectric properties of εr = 12.4, Q × f = 192173 GHz, and τf = -19.2 ppm/°C.

Original languageEnglish
Pages (from-to)641-644
Number of pages4
JournalJournal of the American Ceramic Society
Issue number2
Publication statusPublished - 2007 Feb

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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