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Very High Critical Field and Superior J c ‐Field Performance in NdFeAsO 0.82 F 0.18 with T c of 51 K
Author(s) -
Wang Xiaolin,
Ghorbani Shaban Reza,
Peleckis Germanas,
Dou Shixue
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200801527
Subject(s) - superconductivity , critical field , materials science , condensed matter physics , field (mathematics) , supercurrent , physics , josephson effect , mathematics , pure mathematics
A new family of oxypnictide superconductors, LaFeAsO 0.89 F 0.11 , brings new impetus to the field of high‐temperature superconductivity. In this work, we show that the upper critical field values H c2 (48 K) = 13 T and H c2 (0) can exceed 80–230 T in a high‐pressure‐fabricated NdO 0.82 F 0.18 FeAs bulk sample with T c of 51 K. We also demonstrate the superior performance of supercurrent density in fields for this new superconductor.