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Detached Solidification of InSb on EarthDetached solidification of lightly gallium-doped indium antimonide was achieved in the laboratory only when the ampoule was coated with hexagonal boron nitride and when the material appeared to be oxide-free. A furnace was constructed with the temperature increasing with height in order to minimize bouyancy-driven convection, so as to maximize transport of segregated dissolved gases into the gap between the growing solid and the ampoule wall. There appeared to be no difference in results with freezing rates of 5 mmh and 10 mm/h. Best results were obtained when the ampoule was backfilled with 20 kPa of Ar-10%H2 prior to sealing. The detached portions were depressed by several pm from adjacent attached regions, were rough, and sometimes had microfacets and steps.
Document ID
20030053195
Acquisition Source
Marshall Space Flight Center
Document Type
Other
Authors
Wang, Jianbin
(Clarkson Univ. Potsdam, NY, United States)
Regel, Liya L.
(Clarkson Univ. Potsdam, NY, United States)
Wilcox, William R.
(Clarkson Univ. Potsdam, NY, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Solid-State Physics
Funding Number(s)
CONTRACT_GRANT: NAG8-1482
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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