REVERSIBLE MAGNETIZATION OF BI2SR2CACU2O8 SINGLE-CRYSTALS AT 30-K-LESS-THAN-OR-EQUAL-TO-T-LESS-THAN-TC

Authors
QIANG L SHIBUTANI K SUENAGA M SHIGAKI I OGAWA R
Citation
L. Qiang et al., REVERSIBLE MAGNETIZATION OF BI2SR2CACU2O8 SINGLE-CRYSTALS AT 30-K-LESS-THAN-OR-EQUAL-TO-T-LESS-THAN-TC, Physica. B, Condensed matter, 194, 1994, pp. 1501-1502
Citations number
7
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
2
Pages
1501 - 1502
Database
ISI
SICI code
0921-4526(1994)194:<1501:RMOBSA>2.0.ZU;2-E
Abstract
We report magnetization measurements on high-quality Bi2Sr2CaCu2O8 sin gle crystals in H // the c-axis. Our reversible magnetization data at 30 K less-than-or-equal-to T < T(c) show strong deviations from the li near dependence of M on ln(H) in the intermediate-field region. The Gi nzburg-Landau parameter kappa, obtained by using the Hao-Clem variatio nal model, was found to vary significantly with the field range for th e data fitting. This unusual behavior can not be explained by the ther mal fluctuations of the vortices in layered superconductors.