Low-field anisotropic properties of single crystals of superconducting YBa2Cu3O7− δ

Low-field (0.4 G⩽ H⩽3 G) magnetization measurements have been performed on small single crystals of superconducting YBa 2Cu 3O 7−δ ( T c⋍95 K) using a SQUID magnetometer. They revealed anisotropic properties in the temperature dependences of the shielding and the Meissner effects. A sharp unique tra...

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Bibliographic Details
Published in:Physica B + C 1987-12, Vol.148 (1), p.325-328
Main Authors: Hammann, J., Ocio, M., Vincent, E., Bertinotti, A., Luzet, D., Revcolevschi, A., Jegoudez, J.
Format: Article
Language:English
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Summary:Low-field (0.4 G⩽ H⩽3 G) magnetization measurements have been performed on small single crystals of superconducting YBa 2Cu 3O 7−δ ( T c⋍95 K) using a SQUID magnetometer. They revealed anisotropic properties in the temperature dependences of the shielding and the Meissner effects. A sharp unique transition at 95 K is observed with the field parallel to c. In the perpendicular direction a second transition line seems to be crossed at T ∗=84 K. This temperature, T ∗, decreases slightly as a function of the applied field in the range of fields investigated.
ISSN:0378-4363
DOI:10.1016/0378-4363(87)90224-5