Fabrication of thin‐film superconductors by bulk processing
作者:
T. H. Tiefel,
S. Jin,
G. W. Kammlott,
J. E. Graebner,
R. B. van Dover,
N. D. Spencer,
期刊:
Applied Physics Letters
(AIP Available online 1991)
卷期:
Volume 58,
issue 17
页码: 1917-1919
ISSN:0003-6951
年代: 1991
DOI:10.1063/1.105047
出版商: AIP
数据来源: AIP
摘要:
A simple processing technique for preparation ofc‐axis‐oriented Bi‐Pb‐Sr‐Ca‐Cu‐O thin films is reported. ∼3000‐A˚‐thick superconductor films on silver substrate have been obtained by heavy cold rolling and partial melt processing of the superconductor‐silver composite structure. The films are highly textured due to the interface‐induced, layer‐like growth of the superconducting phase, and are essentially free of weak links. They exhibitedTc∼80 K andJc(4.2 K) ∼104–105A/cm2. This technique, which does not require epitaxial growth from single‐crystal substrates, may be suitable for high‐speed, low‐cost production of large‐area thin films, and points to other novel thin‐film processing possibilities.
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