High-pressure dc sputtering of High-T
c
BPSCCO thin films withT
c(0)
above 100 K |
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Authors: | S P Chowdhury V Vasudeva Rao |
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Affiliation: | 1. Cryogenic Engineering Centre, Indian Institute of Technology, 721 302, Kharagpur, India
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Abstract: | High-T c Bi(Pb)-Sr-Ca-Cu-O thin films have been made on single-crystal MgO substrates using high-pressure dc sputtering technique. X-ray studies confirm the crystallinity and highly oriented structure withc-axis perpendicular to the substrate. By optimizing the annealing schedule the formation of the high-T c phase is stabilized. The best film exhibited superconducting transition temperature with zero-resistance temperature,T c(0), as high as 101 K. Temperature dependence ofJ c indicates the presence of Josephson-type weak links. |
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Keywords: | |
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