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Crystal growth of YBa2Cu3O(7-x) and reaction of gold crucible with Ba-Cu-rich fluxYBa2Cu3O(7-x) crystals are grown in a gold crucible by a self-flux method. The flux moves along the gold surface due to surface wetting and leaves Y123 crystals behind. The obtained crystals are clean and have a size up to two millimeters and a Tc is greater than 90 K. In an effort to recycle the used crucibles, it is found that the used gold is contaminated by copper. A CuO thin film is easily formed on the surface of the crucible that is made of the used gold. This film provides good surface wetting and a buffer layer, which reduces the reaction between gold and the Y-Ba-Cu-oxide melt.
Document ID
19920042803
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Tao, Y. K.
(NASA Headquarters Washington, DC United States)
Chen, H. C.
(NASA Headquarters Washington, DC United States)
Martini, L.
(NASA Headquarters Washington, DC United States)
Bechtold, J.
(NASA Headquarters Washington, DC United States)
Huang, Z. J.
(NASA Headquarters Washington, DC United States)
Hor, P. H.
(Houston, University TX, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1991
Publication Information
Publication: Journal of Crystal Growth
Volume: 114
Issue: 3
ISSN: 0022-0248
Subject Category
Solid-State Physics
Accession Number
92A25427
Funding Number(s)
CONTRACT_GRANT: NAGW-977
CONTRACT_GRANT: NSF DMR-86-126539
CONTRACT_GRANT: MDA972-88-G-0002
Distribution Limits
Public
Copyright
Other

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