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Growth of samarskite crystal under microgravity conditions (M-20)The purpose of the experiment was to grow single crystals of samarskite under microgravity conditions by the traveling solvent float zone (TSFZ) method, and to study the phase relations in the samarskite-related systems involving liquid phases by the slow cooling float zone (SCFZ) method. Samarskite is one of the minerals in a metamict state and is composed of Ca, Fe, Y, U, Th, Nb, Ta, O, etc. Alpha-particles radiating from uranium and/or thorium in the samarskite itself has destroyed its original structure without damaging its chemical composition and its external form. Consequently its structure was converted into a vitreous structure.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Takekawa, S.
(National Inst. for Research in Inorganic Materials Tokyo, Japan)
Date Acquired
September 6, 2013
Publication Date
August 1, 1993
Publication Information
Publication: NASA. Marshall Space Flight Center, Spacelab J Experiment Descriptions
Subject Category
Materials Processing
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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