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Crystal growth of selected II-VI semiconducting alloys by directional solidificationA Hg(0.84)Zn(0.16)Te alloy crystal was back-melted and partially resolidified during the first United States Microgravity Laboratory (USML-1) mission in the Marshall Space Flight Center's Crystal Growth Furnace. The experiment was inadvertently terminated at about 30% of planned completion. Nonetheless, it was successfully demonstrated that HgZnTe alloy ingots partially grown and quenched on the ground can be back-melted and regrown in space under nearly steady state growth conditions. An identical 'ground-truth' experiment was performed following the mission. Preliminary results are presented for both crystals, as well as for a series of other crystals grown prior to the mission for the purposes of optimizing in-flight growth conditions.
Document ID
19950007800
Document Type
Conference Paper
Authors
Lehoczky, Sandor L. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Szofran, F. R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Gillies, D. C. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Cobb, S. D. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Su, C.-H. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Sha, Y.-G. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Andrews, R. N. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1994
Publication Information
Publication: Joint Launch + One Year Science Review of USML-1 and USMP-1 with the Microgravity Measurement Group
Subject Category
MATERIALS PROCESSING
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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