High-pressure dc sputtering of High-Tc BPSCCO thin films withTc(0) above 100 K |
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Authors: | S P Chowdhury and 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: | HighT
c
thin film High-pressure dc sputtering superconducting phases Josephson-type weak links |
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