Contactless determination of critical current density of superconducting films

0383731 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Janů, Zdeněk - Švindrych, Zdeněk - Baničová, L.
Contactless determination of critical current density of superconducting films.
IEEE Transactions on Applied Superconductivity. Roč. 22, č. 3 (2012), "9500804-1"-"9500804-4". ISSN 1051-8223. E-ISSN 1558-2515
Grant CEP: GA MŠMT(CZ) ME10069
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: ac susceptibility * critical state * thin films
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.199, rok: 2012

We discuss an inductive method of contactless estimation of the critical depinning current density in films and its temperature dependence. The method is based on a measurement of the magnetic moment of the film induced in an applied ac magnetic field oriented perpendicularly to the film. Mapping of the ac susceptibility computed on the basis of model magnetization loops and measured magnetization loops as a function of the applied field and temperature allows unambiquously find the critical current density and its temperature dependence.
Trvalý link: http://hdl.handle.net/11104/0213580