Low-fire BiTaO4 dielectric ceramics for microwave applications

Cheng Liang Huang, Min Hang Weng

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The dielectric properties at microwave frequencies and the microstructures of BiTaO4 ceramics with 0.5 wt.% doping of CuO have been investigated. The BiTaO4 ceramics can be sintered to approach 95% theoretical density at 960°C. Sintered ceramic samples were characterized by X-ray and scanning electron microscopy (SEM). The dielectric constant values (εr) saturate at 44-45. The Q × f values of 8000-12 000 (at 6 GHz) can be obtained when the sintering temperatures are in the range of 920-960°C. The temperature coefficient of resonant frequency τf was -40 ppm/°C. The BiTaO4 ceramics have applications for multilayer microwave devices requiring low sintering temperatures.

Original languageEnglish
Pages (from-to)32-35
Number of pages4
JournalMaterials Letters
Volume43
Issue number1
DOIs
Publication statusPublished - 2000 Mar

All Science Journal Classification (ASJC) codes

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

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