Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Variation of Dielectric Properties and Phase Stabilities with Substitution of A-Site in $Pb(Zn_{0.6}Mg_{0.4})_{1/3}Nb_{2/3}O_3$[PZMN] System

$Pb(Zn_{0.6}Mg_{0.4})_{1/3}Nb_{2/3}O_3$ [PZMN] 계에서 A-자리 치환에 따른 상안정화 및 유전 특성 변화

  • 김봉철 (경북대학교 무기재료공학과) ;
  • 김정주 (경북대학교 무기재료공학과) ;
  • 김남경 (경북대학교 무기재료공학) ;
  • 조상희 (경북대학교 무기재료공학과)
  • Published : 1996.10.01
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Abstract

The dielectric properties and phase stabilities of Pb(Zn0.6Mg0.4)1/3Nb2/3O3 [PZMN]system were investigated into substitution of A-site with Ba, Sr and Ca ions. The A-site substitutions led to the complexity of components of perovskite phase and then DPT coefficient increased. The A-site substitutions of Ba or Sr ion perovskite single phase could be easily formed by columbite process due to increase of perovskite phase stability. The variation of lattice parameters in specimen obeyed Vegard's law and curie temperature and dielectric constant of specimen decreased linearly. But Ca substitution led to perovskite phae instability. The lattice parameter dielectric constant and curie temperature of specimens drasticaly decreased with formation of pyrochlore phase.

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References

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