Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effects of Sr on the Characteristics of PZT Ceramics Prepared by Hydrothermal Process

수열합성법에 의해 제조된 PZT의 특성에 미치는 Sr의 영향

  • Yang, Beom-Seok (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University) ;
  • Shin, Chang-Yun (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University) ;
  • Won, Chang-Whan (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University)
  • 양범석 (충남대학교 급속응고신소재연구소) ;
  • 신창윤 (충남대학교 급속응고신소재연구소) ;
  • 원창환 (충남대학교 급속응고신소재연구소)
  • Published : 2008.11.30
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Abstract

The sintering and electrical properties of the hydrothermal PSZT powders obtained by substituting 4, 6 and 8mol% Sr for Pb in PZT lattice structure were investigated. The lattice constant and particle size decreased in proportion to a quantity of Sr. The sintering properties of PSZT powders showed $7.754g/cm^3$ of sintered density and $4{\mu}m$ of grain size at sintering temperature of $1250^{\circ}C$. Curie temperature lowered gradually from $363.6^{\circ}C\;to\;319.2^{\circ}C$ and relative dielectric constants increased rapidly by a quantity of Sr. In comparison to PZT, moreover, the quality factor of PSZT was increased more than three times with increase of Sr mole ratio, and piezoelectric constant $(d_{31}\;and\;g_{31})$ was decreased. It was found that dielectric loss of PSZT was decreased by 0.574% which was half of PZT.

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References

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