Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Growth and magnetic properties of Tb, Eu, EuTb-substituted garnet single crystal films

Tb, Eu, EuTb가 치환된 가네트 단결정 막의 성장과 자기적 특성

  • 김근영 (성균관대학교 신소재공학과) ;
  • 윤석규 (성균관대학교 신소재공학과) ;
  • 정일섭 (성균관대학교 정보통신 공학부) ;
  • 박승배 (성균관대학교 정보통신 공학부) ;
  • 윤대호 (성균관대학교 신소재공학과)
  • Published : 2004.10.01
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Abstract

Using the $PbO-B_2O_3-Bi_2O_3$ flux system, $(TbBi)_3(FeAIGa)_5O_{12}(TbIG)$, $(EuBi)_3(FeAIGa)_5O_{12}(EuIG)$ and $(EuTbBi)_3(FeAIGa)_5O_{12}(EuTbIG)$ films were grown on $(GdCa)_3(GaMgZr)_5O_{12}(SGGG)$ substrates by the liquid phase epitaxy (LPE). The saturation magnetization of the grown TbIG, EuIG and EuTbIG films was about 150, 950 and 125 Oe, respectively. The TbIG films resulted in the single magnetic domain while the EuIG and EuTbIG films were observed to be the multi magnetic domains by magnetic force microscope (MFM).

$(TbBi)_3(FeAIGa)_5O_{12}(TbIG)$, $(EuBi)_3(FeAIGa)_5O_{12}(EuIG)$, $(EuTbBi)_3(FeAIGa)_5O_{12}(EuTbIG)$ 가네트 막을 $PbO-B_2O_3-Bi_2O_3$ 융제를 사용하여 $(GdCa)_3(GaMgZr)_5O_{12}(SGGG)$ 기판 위에 liquid phase epitaxy(LPE) 방법으로 성장시켰다. 성장된 TbIG, EuIG, EuTbIG 가네트 막의 포화자계값은 각각 150 Oe, 950 Oe, 170 Oe를 보였으며, magnetic force microscope(MFM) 분석을 측정 한 결과 TbIG 막에서는 단일 자구가 관찰되었으며, EuIG와 EuTbIG 막에서는 다 자구가 관찰되었다.

Keywords

References

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