Microstructures and microwave dielectric properties of (1 - x)MgO·xBaO·TiO2 ceramics

Hsun Chin Chen, Ming Hang Weng, Chen I. Hung, Mau Phon Houng

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1 Citation (Scopus)


The microstructures and microwave dielectric properties of (1 - x)MgO·xBaO·TiO2 ceramics (x = 0.005, 0.01, 0.03, and 0.05) prepared by a conventional solid-state reaction method and sintered at temperatures from 1280°C to 1400°C were investigated. Some minor phases were observed in (1 - x)MgO·xBaO·TiO2 under different sintering conditions. The dielectric constant and Q × f of the specimens increased with an increase in x. In the (1 - x)MgO·xBaO·TiO 2 system, the temperature coefficient of resonant frequency could be controlled by varying x and can lead to a zero τf. For practical applications, 0.97MgO·0.03BaO·TiO2 ceramics sintered at 1320°C have excellent microwave dielectric properties: εr = 20.6, Q × f = 32600 GHz and τf = +4.47ppm/°C.

Original languageEnglish
Pages (from-to)2564-2567
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number5 A
Publication statusPublished - 2004 May

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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