| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-2163 - C8-2164 | |
| DOI | https://doi.org/10.1051/jphyscol:19888969 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2163-C8-2164
DOI: 10.1051/jphyscol:19888969
1 Laboratoire de Physique des Solides, Université de Paris-Sud, F-91405 Orsay, France
2 Chemistry Division, Bhabha Atomic Research Center, Bombay, 400 085 India
J. Phys. Colloques 49 (1988) C8-2163-C8-2164
DOI: 10.1051/jphyscol:19888969
MAGNETIC HYSTERESIS OF SUPERCONDUCTING GdBa2Cu3O7 DOWN TO 1.8 K
S. Senoussi1, P. V. S. S. Sastry2, J. V. Yakhmi1, 2 et I. A. Campbell11 Laboratoire de Physique des Solides, Université de Paris-Sud, F-91405 Orsay, France
2 Chemistry Division, Bhabha Atomic Research Center, Bombay, 400 085 India
Abstract
We report magnetization measurements on single-phase sintered GdBa2Cu3O7 between 1.5 and 100 K and in fields up to 35 kG. The shape of the low-field diamagnetic loop at 4.2 K is typical of the high-Tc Y-Ba-Cu-O systems and is imposed by Josephson junctions. The high-field regime is influenced by the paramagnetic response of Gd-ions. Saturation effects are observed near the Néel temperature TN ˜ 2.5 K. The intra-grain magnetic critical current Jc is roughly the same (˜ 106 A / cm2 at 4.2 K) as in Y-Ba-Cu-O systems either granular of single crystals.