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Title: The magnetic-moment relaxation in oxygen-deficient yba2cu3ox
Authors: Vanacken, Johan
Libbrecht, S
Maenhoudt, M
Van Haesendonck, Christian
Osquiguil, E
Bruynseraede, Yvan
Issue Date: Jul-1992
Publisher: Elsevier science bv
Series Title: Physica c vol:197 issue:1-2 pages:9-14
Abstract: The magnetic moment relaxation in polycrystalline YBa2Cu3Ox material has been studied using zero-field-cooled measurements. The temperature dependence of the relaxation rate shows a field-dependent maximum. When the oxygen content is reduced, the maximum shifts towards lower temperatures. This shift is directly related to a decrease of the intragrain critical current density in the oxygen-deficient material, inducing a decrease of the field H* for complete flux penetration. The characteristic activation energies for depinning in the oxygen-deficient material are below 20 meV.
ISSN: 0921-4534
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Solid State Physics and Magnetism Section

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