Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Ferroelectric PLZT Thin Films Prepared by Sol-Gel Route

졸-겔법에 의한 PLZT 합성과 강유전성 박막 제조

  • 오영제 (한국과학기술연구원 재료연구단) ;
  • 김정기 (한국과학기술연구원 재료연구단) ;
  • 주기태 (한국과학기술연구원 재료연구단) ;
  • 현상훈 (연세대학교 세라믹공학과) ;
  • 정형진 (한국과학기술연구원 재료연구단)
  • Published : 1992.11.01
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Abstract

Lead lanthanum zirconate titanate (PLZT, 6/65/35) powders, crack-free and dense thin films have been prepared by polymeric sol-gel process. Pyrolysis of the gel, crystallization and optical transmittance behavior of the PLZT thin film onto sapphire substrate have been studied. Esterification occurs during synthesis of PLZT complexation. Crystalline Pb phase was transiently formed near 450$^{\circ}C$. Content of perovskite phase in the films were increased with increasing thickness of film, but the kinetics of formation of perovskite phase in films was slower than that of powders. Transmittance of the films was decreased with increasing the temperature of heat treatment. Ferroelectric hysteresis loop measurements indicated increments of remanent polarization and coercive field for plenty more of perovskite phase.

Keywords

References

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