Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparations of $(Zr_{0.08}Sn_{0.2})TiO_4$ Dielectric Powders by Coprecipitation of $(Zr^{4+}, Ti^{4+})-Hydroxides in the Presence of SnO2 Particles

부분 공침법에 의한 $(Zr_{0.08}Sn_{0.2})TiO_4$ 분말합성 및 유전특성

  • 임경란 (한국과학기술연구원 세라믹스연구부) ;
  • 장진욱 (서울대학교 무기재료공학과)
  • Published : 1994.11.01
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Abstract

(Zr, Sn)TiO4 powders were prepared in 0.05~0.13 ${\mu}{\textrm}{m}$ by coprecipitating (Zr4+, Ti4+)hydroxide on SnO2 particles and followed by calcination at 90$0^{\circ}C$ for 2 h. They sinter to 95% of relative density at 140$0^{\circ}C$ for 2 h. and shows dielectric constant, $\varepsilon$r=37.5 and quality factor, Qxf(GHz)=46,000. With 3 mol% of ZnO it sinters to rel=97.5%, $\varepsilon$r=39 and Qxf(GHz)=40,050 at 135$0^{\circ}C$ for 2 h., but raising sintering temperature to 140$0^{\circ}C$ deteriorates quality factor, relative density and microstructure with developing second phase.

Keywords

References

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