Microwave dielectric properties of BaO-TeO2 binary compounds

Do Kyun Kwon, Michael T. Lanagan, Thomas R. Shrout

Research output: Contribution to journalArticle

95 Scopus citations

Abstract

A series of BaO-TeO2 binary ceramic compounds were explored for microwave dielectric applications with ultra-low processing temperatures. During the calcination of mixed BaCO3 and TeO2 raw powders, BaTe4O9, BaTe2O6, BaTeO3, and Ba2TeO5 phases were obtained through the sequential phase formations from Te-rich to Ba-rich phases at temperatures ranging from 500 to 850 °C. Sintering temperatures were as low as only 550 °C for the Te-rich phases. Barium tellurate ceramics exhibited excellent microwave dielectric properties with intermediate dielectric permittivities and high quality factors (Q). The dielectric properties at microwave frequencies were εr = 10-21, Q × f = 34,000-55,000 GHz, and TCf = - 51 to - 124 ppm/°C, depending on compositions.

Original languageEnglish (US)
Pages (from-to)1827-1831
Number of pages5
JournalMaterials Letters
Volume61
Issue number8-9
DOIs
StatePublished - Apr 1 2007

All Science Journal Classification (ASJC) codes

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

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