| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-2109 - C8-2110 | |
| DOI | https://doi.org/10.1051/jphyscol:19888948 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2109-C8-2110
DOI: 10.1051/jphyscol:19888948
Centre de Recherches sur les Très Basses Températures, C.N.R.S., BP 166X, 38042 Grenoble Cedex, France
J. Phys. Colloques 49 (1988) C8-2109-C8-2110
DOI: 10.1051/jphyscol:19888948
INTRINSIC GEOMETRICAL BOUNDARIES FOR THE CRITICAL CURRENTS INSIDE YBa2Cu3O7-x SINGLE CRYSTALS
A. Sulpice, P. Lejay, R. Tournier et J. ChaussyCentre de Recherches sur les Très Basses Températures, C.N.R.S., BP 166X, 38042 Grenoble Cedex, France
Abstract
Magnetization curves have been measured on YBa2Cu3O7-x single crystals of various size, and compared with other results published in the literature. The irreversible magnetization does not follow the scaling law predicted by the Bean model. We conclude that even the superconducting crystals contain normal barriers or weak links which limit the spatial scale of supercurrents.