Determination of the Critical Temperature and Oxygen Content Variations
Along the c-axis of YBCO Epitaxial Films

Yohann Thimont, Jean-François Hamet, Séverine Mouchel and Pierre Bernstein

CRISMAT-ENSICAEN et Université de Caen,
Boulevard du Maréchal Juin F14050, Caen, France

E-Mail : pierre.bernstein@ensicaen.fr

ABSTRACT - The existence of non-superconducting zones in YBa₂Cu₃O₇- (YBCO) films below the transition temperature to the non-resistive state can be the cause of losses that limit the performances of YBCO devices. In this contribution, from the dependence on temperature of the surface critical current density of YBCO films we examine the possibility that their superconducting critical temperature is non-uniform along their c-axis.

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IEEE/CSC & ESAS EUROPEAN SUPERCONDUCTIVITY NEWS FORUM (ESNF), No. 11, January 2010
Published in Journal of Physics Conf. Series (SuST) 234, 012003 (2010)