PINNING AND IRREVERSIBILITY BEHAVIOR IN AU-IRRADIATED BI-2212 FILMS

Authors
FRANK H LEMMENS P LETHEN J WIESENER J WIRTH G WAGNER P ADRIAN H GUNTHERODT G
Citation
H. Frank et al., PINNING AND IRREVERSIBILITY BEHAVIOR IN AU-IRRADIATED BI-2212 FILMS, Physica. C, Superconductivity, 235, 1994, pp. 2739-2740
Citations number
3
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
4
Pages
2739 - 2740
Database
ISI
SICI code
0921-4534(1994)235:<2739:PAIBIA>2.0.ZU;2-U
Abstract
Pinning and irreversibility behavior of de-sputtered and Au-irradiated Bi-2212 films have been investigated by means of SQUID-magnetometry. For different field regimes a basically different course of the irreve rsibility line as a result of Au-irradiation is found. A maximum shift of the irreversibility line by 20K occurs at H=15kOe as a result of i rradiation by a dose of Phi=10(11) cm(-2), whereas for higher fields, the efficiency of the columnar defects is reduced. Above H=15kOe a cha nge in the temperature dependence of the irreversibility field occurs indicating a transition from a 3D vortex glass to a 2D vortex lattice.