Critical current study using ac susceptibility measurements in ErBa2Cu3O7-delta crystal showing the fishtail effect

Authors
Cardoso, CA Avila, MA Ribeiro, RA de Lima, OF
Citation
Ca. Cardoso et al., Critical current study using ac susceptibility measurements in ErBa2Cu3O7-delta crystal showing the fishtail effect, PHYSICA C, 341, 2000, pp. 1291-1292
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
2
Pages
1291 - 1292
Database
ISI
SICI code
0921-4534(200011)341:<1291:CCSUAS>2.0.ZU;2-T
Abstract
Different chi (ac) measurements can be collapsed into a single curve if plo tted against the ac penetration depth delta = h/Jd. Further, using this sca ling law, it is possible to obtain the frequency dependence of the shieldin g current density J(nu, B, T). In this work, this scaling relation was test ed for a ErBa2Cu3O7-delta single crystal. The frequency dependence of J(nu, B, T) displays a behavior closely related with the second magnetization pe ak ("fishtail effect") observed in M x H curves. This result supports a dyn amical interpretation for the fihtail effect.