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Crystal Growth of Selected II-VI Semiconducting Alloys By Directional SolidificationA Hg0.84Zn0.16Te 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
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
S L Lehoczky (Marshall Space Flight Center Redstone Arsenal, United States)
F R Szofran (Marshall Space Flight Center Redstone Arsenal, United States)
D C Gillies (Marshall Space Flight Center Redstone Arsenal, United States)
S D Cobb (Marshall Space Flight Center Redstone Arsenal, United States)
C-H Su (Universities Space Research Association Columbia, United States)
Y-G Sha (Universities Space Research Association Columbia, United States)
R N Andrews (University of Alabama at Birmingham Birmingham, 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
Publisher: National Aeronautics and Space Administration
Subject Category
Materials Processing
Report/Patent Number
CP-3272-VOL-1
Meeting Information
Meeting: Joint Launch + One Year Science Review of USML-1 and USMP-1 with the Microgravity Measurement Group
Location: Huntsville, AL
Country: US
Start Date: September 22, 1993
End Date: September 24, 1993
Sponsors: National Aeronautics and Space Administration
Accession Number
95N14214
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.

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IDRelationTitle19950007793Collected WorksJoint Launch + One Year Science Review of USML-1 and USMP-1 with the Microgravity Measurement Group
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