| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-2167 - C8-2168 | |
| DOI | https://doi.org/10.1051/jphyscol:19888971 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2167-C8-2168
DOI: 10.1051/jphyscol:19888971
Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India
J. Phys. Colloques 49 (1988) C8-2167-C8-2168
DOI: 10.1051/jphyscol:19888971
UPPER CRITICAL FIELD IN Y0.8Ln0.2Ba2Cu3O7-z, Ln = Dy, Er and Tm SUPERCONDUCTORS
U. De, S. Kalavathi, T. S. Radhakrishnan et G. V. Subba RaoMaterials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India
Abstract
Resistively measured upper critical field, Hc2 (T), for fields up to 120 kOe are reported for the new superconductors Y0.8Ln0.2Ba2Cu3O7-z, Ln = Dy, Er and Tm. A concave curvature is observed for all the Hc2 (T) us. T graphs at lower fields. Origin of the curvature from the anisotropy of Hc2 and alternatively from critical fluctuations are discussed.