Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Dependence of Microstructure of Sintered $Y_3$Fe$_5$O$_{12}$ in Addition of CuO

CuO 첨가에 따른 $Y_3$Fe$_5$O$_{12}$ 소결체의 미세구조 변화

  • 이재동 (부산대학교 공과대학 무기재료공학과) ;
  • 김광석 (부산대학교 공과대학 무기재료공학과) ;
  • 김성재 (국방과학연구소) ;
  • 김태옥 (부산대학교 공과대학 무기재료공학과)
  • Published : 1998.10.01
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Abstract

As results of the study on the sinterbility of YIG at the low temperature using CuO as additive CuO com-pound which contain {{{{ { {Fe }_{2 }O }_{3 } }} was shown liquid in sintering process. YIG crystal dissolved into CuO compound liquid phase and then Y element which is considered no solubility in solid CuO compound moved to the grain during cooling. The abnormal grain growth up to 150${\mu}{\textrm}{m}$ at CuO 8.6mole% was shown due to shape accomdation reaction and local liquid distribution. The apparent density of YIG shows minimum at CuO 8.6 mole% due to abnormal grain growth and the saturation magnetization decrease dramatically at 32.5mole% due to orthoferrite formation.

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References

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