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
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    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
    Volume90
    Issue number2
    DOIs
    Publication statusPublished - 2007 Feb

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry

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