Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Annealing for YIG Single Crystal Thick Films

YIG 단결정 후막의 열처리의 효과

  • 김근영 (성균관대학교 신소재공학과) ;
  • 윤석규 (성균관대학교 신소재공학과) ;
  • 김용탁 (성균관대학교 신소재공학과) ;
  • 이성문 (성균관대학교 신소재공학과) ;
  • 윤대호 (성균관대학교 신소재공학과)
  • Published : 2003.09.01
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Abstract

When the PbO-based flux system is used in the Liquid Phase Epitaxy (LPE) method for Yttrium Iron Garnet (YIG) thick film, the effect of Pb ions incorporated into the grown crystal; increase the lattice parameter, changed the uniaxial magnetic anisotropy constant (Ku) or conductance of grown film. It exerts a bad influence on physical property such as increasing optical absorption of grown film. The content of the Pb ion in crystal was decreased by volatilization of Pb ion after annealing; therefore, the lattice parameter of film was reduced on an average 0.0115 ${\AA}$ by the the Pb ion.

Liquid Phase Epitaxy (LPE)법으로 Yttrium Iron Garnet (YIG:Y$_3$Fe$_{5}$O$_{12}$) 단결정 후막을 성장시킬 때 PbO계 응제에서는 Pb 이온이 성장되는 결정내로 혼입되어 성장된 막의 격자상수를 증가시키고, 일축 자기이방성 상수값(Ku)을 변화시키거나 전기 전도도를 변화시킨다. 또한 광 흡수율을 증가시키는 등의 성장된 막의 물성에 악영향을 미친다. 열처리 후 Pb 이온의 휘발로 인한 결정내의 농도감소로 성장된 단결정 후막의 격자상수가 평균 0.0115$\AA$ 감소하였다.

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References

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