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Reduction and Reoxidation Experiments on Yba2cu3-Xalxo6+Delta Single-Crystals

Physica C 235: 471-472

Autoren/Herausgeber: Brecht E
Schmahl WW
Miehe G
Fueß H
Andersen NH
Wolf T
Erschienen: 1994

We performed thermal treatments in different atmospheres on tetragonal YBa2Cu3-xAlxO6+delta single crystals. The transformation from tetragonal tweed to orthorhombic twin structure of YBa2Cu3-xAlxO6+delta single crystals by reduction and subsequent reoxidation is reversible. The orthorhombicity of reoxidized crystals depends on the temperature during reduction.