Magnetic relaxation and critical current in an YBaCuO crystal
- 15 November 1988
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 64 (10) , 5797-5799
- https://doi.org/10.1063/1.342208
Abstract
We have measured the temperature dependence of magnetic relaxation and critical current in an YBaCuO single crystal. Unusually strong time‐logarithmic magnetic relaxation is observed. The relaxation rate increases initially with temperature, peaks at ≂25 K and slows down at higher temperatures. The results, interpreted with a thermally activated flux model, yield a low‐temperature pinning energy U0≂0.02 eV. This low pinning energy results in an unusually rapid decrease of the critical current as temperature is increased.This publication has 14 references indexed in Scilit:
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