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Fabrication and chemical composition of RF magnetron sputtered Tl-Ca-Ba-Cu-O high Tc superconducting thin filmsThe preparation of TlCaBaCuO superconducting thin films on (100) SrTiO3 substrates is described, and the results of their characterization are presented. Sintering and annealing the thin films in a Tl-rich ambient yielded superconductivity with a Tc of 107 K. The results of an XPS study support two possible mechanisms for the creation of holes in the TlCaBaCuO compound: (1) partial substitution of Ca(2+) for Tl(3+), resulting in hole creation, and (2) charge transfer from Tl(3+) to the CuO layers, resulting in a Tl valence between +3 and +1.
Document ID
19900056514
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Subramanyam, G.
(Cincinnati Univ. OH, United States)
Radpour, F.
(Cincinnati Univ. OH, United States)
Kapoor, V. J.
(Cincinnati Univ. OH, United States)
Lemon, G. H.
(Cincinnati, University OH, United States)
Date Acquired
August 14, 2013
Publication Date
August 1, 1990
Publication Information
Publication: Journal of Applied Physics
Volume: 68
ISSN: 0021-8979
Subject Category
Solid-State Physics
Accession Number
90A43569
Distribution Limits
Public
Copyright
Other

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