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A simple statistical phenomenological model for cation substitutions in Nd 1+ x Ba 2− x Cu 3 O 7−δ+ x /2

✍ Scribed by Gombos, M.; Varesi, E.; Tedesco, P.; Vecchione, A.; Pace, S.


Book ID
127227280
Publisher
Taylor and Francis Group
Year
2008
Tongue
English
Weight
482 KB
Volume
88
Category
Article
ISSN
1478-6435

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We investigated the oxygen isotope effect in superconducting Co substituted YBCO. Co concentrations between 4 and 13% were used. The transition temperature T c falls monotonously to 22.7 K for x = 0.13. The oxygen isotope exponent n0 rises from n0 = 0.08 (4% Co) to n0 = 0.46 (x = 0.13%) at the lowes