The Effect of Transverse Magnetic Field on Macrosegregation in Vertical Bridgman Crystal Growth of Te doped InSb

Te 도핑된 InSb의 수직 브릿지만 결정성장시 횡적자장이 거시편석에 미치는 영향

  • 이근희 (한국과학기술원 재료공학과) ;
  • 이진형 (한국과학기술원 재료공학과) ;
  • 윤우영 (고려대학교 공과대학 금속공학과) ;
  • 백홍구 (연세대학교 금속공학부) ;
  • 강춘식 (서울대학교 공과대학 재료공학부)
  • Published : 1997.02.20

Abstract

An investigation of the effects of transverse magnetic field on melt convection and macrosegregation in vertical Bridgman growth of Te doped InSb was carried out by means of microstructure observation, the measurement of Te distribution by Hall measurement, electrical resistivity measurement and X-ray analysis. Prior to the experiments, interface stability, convective instability and suppression of convection by magnetic field were examined. A thermosolutal convection in the Te doped InSb melt occurred in the examined growth condition without magnetic field. The effective distribution coefficient, $K_{eff}$, was about 0.35 without magnetic field, 0.45 with magnetic field of 2kG, and 0.7 at 4kG. It was found that the stronger the applied magnetic field was, the more the convection was suppressed.

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