Suppression of magnetic relaxation processes in hard superconductors by a transverse AC magnetic field
arXiv:cond-mat/0401239
Abstract
The effect of the transverse AC magnetic field on relaxation process in YBaCuO 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.
The paper will be submitted to Physical Review Letters