Low temperature sintering and microwave dielectric properties of 0.6Ba(Co1/3Nb2/3)O3-0.4Ba(Ni1/3Nb2/3)O3 ceramics using copper additions

Cheng Hsing Hsu, Chuan Feng Shih, Cheng Chi Yu, Hsin Han Tung, Man Hsiang Chung

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The dielectric properties and the microstructures of 0.6Ba(Co1/3Nb2/3)O3-0.4Ba(Ni1/3Nb2/3)O3 ceramics with CuO additions (0.25-1 wt%) prepared with conventional solid-state route have been investigated. It is found that 0.6Ba(Co1/3Nb2/3)O3-0.4Ba(Ni1/3Nb2/3)O3 ceramics can be sintered at 1270 °C due to the sintering aid of CuO addition. At 1270 °C, 0.6Ba(Co1/3Nb2/3)O3-0.4Ba(Ni1/3Nb2/3)O3 ceramics with 0.5 wt% CuO addition possesses a dielectric constant (εr) of 32.5, a Q × f value of 82,000 (9 GHz) and a temperature coefficients of resonant frequency (τf) of -21.2 ppm/°C. The CuO-doped 0.6Ba(Co1/3Nb2/3)O3-0.4Ba(Ni1/3Nb2/3)O3 ceramics can find applications in microwave devices requiring low sintering temperature.

Original languageEnglish
Pages (from-to)355-359
Number of pages5
JournalJournal of Alloys and Compounds
Issue number1-2
Publication statusPublished - 2008 Aug 11

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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