Effect of B2O3 addition to La(Co1/2Ti 1/2)O3 ceramics on sintering behavior and microwave dielectric properties

Ching Fang Tseng, Cheng Liang Huang

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Sintering behaviors and microstructural characteristics of La(Co 1/2Ti1/2)O3 ceramics were investigated. The La(Co1/2Ti1/2)O3 ceramics were prepared by the conventional solid-state route. Doping with B2O3 (up to 0.75 wt%) can effectively promote the densificaron of La(Co1/2Ti 1/2)O3 ceramics at a low sintering temperature. With B2O3 addition, the sintering temperature of La(Co 1/2Ti1/2)O3 can be effectively reduced from 1440 to 1230-1350°C. At 1350°C/6 h, La(Co1/2Ti 1/2)O3 ceramic with 0.25 wt% B2O3 addition possesses a dielectric constant (εr) of 30, a Q × f value of 64,600 GHz (at 8 GHz) and a temperature coefficient of resonant frequency (τf) of -48 ppm/°C. The B2O 3-doped La(Co1/2Ti1/2)O3 ceramic is applicable in microwave devices requiring low sintering temperature.

Original languageEnglish
Pages (from-to)8766-8768
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number11
Publication statusPublished - 2006 Nov 15

All Science Journal Classification (ASJC) codes

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

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