한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제30권5호
  • /
  • Pages.365-372
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  • 1993
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

Pyrochlore상의 입자크기에 따른 PMN-Pyrochlore 2상 혼합체의 유전율 변화

Variation of Dielectric Constnat with Grain Size of Pyrochlore Phase in the PMN-Pyrochlore Diphasic Mixtrues

  • 허강일 (경북대학교 무기재료공학과) ;
  • 김정주 (경북대학교 무기재료공학과) ;
  • 조상희 (경북대학교 무기재료공학과)
  • 발행 : 1993.05.01
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초록

Variation of dielectric constant in PMN-Pyrochlore diphasic mixtures were investigated with grain size of pyrochlore phase. Size of pyrochlore phase was controlled by the numbers of calcining and sedimentation method during powder processing. When grain size of pyrochlore phase is large in the sintered specimen, dielectric constant slowly decreased with increase of amount of pyrochlore phase. On the contary, grain size of pyrochlore phase is small, dielectric constant drastically decreased. It was thought that small sized pyrochlore grains more easily surrounded high dielectric phase (perovskite PMN) than large ones with addition of pyrochlore phase.

키워드

참고문헌

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