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Suppression of magnetic relaxation processes in melt-textured YBa$_2$Cu$_3$O$_x$ superconductors by a transverse ac magnetic field

L. M. Fisher·A. V. Kalinov·I. F. Voloshin·V. A. Yampol'skii
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Abstract

The effect of the transverse AC magnetic field on relaxation process in YBa$_2$Cu$_3$O$_x$ melt-textured superconductor was studied. A factor of 50 suppression of the relaxation rate could be achieved at the expense of some reduction in the maximum trapped field, with the magnetic-induction gradient being unchanged. This phenomenon is interpreted as a result of an increase of the pinning force after the action of the transverse AC magnetic field that is confirmed by the measurement of the trapped-induction distribution.

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L. M. Fisher, A. V. Kalinov, I. F. Voloshin, V. A. Yampol'skii. 2005-02-03. Suppression of magnetic relaxation processes in melt-textured YBa$_2$Cu$_3$O$_x$ superconductors by a transverse ac magnetic field. https://doi.org/10.1103/physrevb.71.140503

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