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

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

2005-02-03

arxiv.org/abs/cond-mat/0502070v1

Phys. Rev. B 71, 140503(R) (2005)

Physics

Condensed Matter

Superconductivity

4 pages, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.71.140503

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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