SHORT-TIME STUDY OF THE FISHTAIL EFFECT IN BA0.6K0.4BIO3 SINGLE-CRYSTALS

Authors
HARNEIT W KLEIN T ESCRIBEFILIPPINI C RAKOTO H BROTO JM SULPICE A BUDER R MARCUS J SCHMIDBAUER W
Citation
W. Harneit et al., SHORT-TIME STUDY OF THE FISHTAIL EFFECT IN BA0.6K0.4BIO3 SINGLE-CRYSTALS, Physica. C, Superconductivity, 267(3-4), 1996, pp. 270-278
Citations number
49
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
267
Issue
3-4
Year of publication
1996
Pages
270 - 278
Database
ISI
SICI code
0921-4534(1996)267:3-4<270:SSOTFE>2.0.ZU;2-8
Abstract
A magnetization study using three techniques with different time scale s down to 10(-4) s has been performed on single crystals of the three- dimensional high-T-c superconductor Ba0.6K0.4BiO3. A fishtail effect ( second peak in M(B)) is observed in a large temperature range down to the shortest time scale. At high temperature (T=0.74 T-c) the peak is still visible for the shortest time scale but disappears with increasi ng waiting time showing that it is not related to flux creep phenomena . The origin of the flshtail effect in high-T-c superconductors is dis cussed.