Publication

Influence of Spatial-Distribution of Trapped Magnetic-Flux on the Effective Pinning Energy of Vortices in Ceramic Y-Ba-Cu-O

Alexander Tagantsev
1994
Journal paper
Abstract

Relaxation of the isothermoremanent magnetization M(IR) has been studed in ceramic Y-Ba-Cu-O. The value of the effective pinning energy U(eff) has been determined at different temperatures according the relationship dlnM(IR)/dlnt = - kT/U(eff). It was shown that the dependence of U(eff) on the magnetizing field H(o) can be attributed to the evolution of the trapped flux distribution (as H(o) is varied) without involving any assumptions about the dependence of the pinning barrier on the field.

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