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

The Korea Association of Crystal Growth (한국결정성장학회)
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$YbFeCoO_4$ single crystal growth by FZ method

FZ법에 의한 $YbFeCoO_4$ 단결성 성장

  • Kang, S.M. (Dept. of Inorganic Materials Engineering, Hanyang University) ;
  • Orr, K.K. (Dept. of Inorganic Materials Engineering, Hanyang University)
  • 강승민 (한양대학교 무기재료공학과) ;
  • 오근호 (한양대학교 무기재료공학과)
  • Published : 1994.03.01
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Abstract

$YbFeCoO_4$ single crystal was grown by floating zone method. The atmospheric condition of the growth was controlled in air and the growth rate was 1~2 mm/hr. After melting the feed rod of the composition of $YbFeCoO_4$, $YbFeCoO_4$ was decomposed to $YbFeCoO_4$ and CoO phase in the initial state of the growth. The liquid composition, however, changed to the direction of the eutectic point along the liquidus line and then stopped at the point in which $YbFeCoO_4$ single crystal could be grown. The growth direction of the crystal was preferred orientation [110], perpendicular to the c-axis in the hexagonal system due to using the polycrystalline seed.

FZ법을 이용하여 $YbFeCoO_4$ 단결정을 성장하였다. 결정 성장은 공기분위기 중에서 이루어졌으며, 성장 속도는 1~2mm/hr로 조절하였으며, 성장 초기는 $YbReO_3$와 CoO로 분해 되었으나 용융 후 액상의 조성이 변화됨에 따라 $YbFeCoO_4$ 단일사의 단결정이 육성되었다.결정의 성장 방향은 c축에 수직으로 성장하였으며 다결정의 종자 결정을 이용하여 용이성장축으로 성장된 결정의 성장 방향은[110]방향이었다.

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