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Oxide superconductor YBa2Cu3O7−x and its derivatives

✍ Scribed by Liquian Chen


Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
783 KB
Volume
28-30
Category
Article
ISSN
0167-2738

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YBa2CUaOT\_x/Sn (YBCO/Sn) composites sintered at 230 ~ exhibited a percolation threshold for electrical conductivity at 20 vol % Sn, with semiconducting and metallic behaviour below and above it, respectively. The simultaneous decrease in r = dp/d T and Po with increase in Sn content was related to