A new kind of vortex pinning in superconductor / ferromagnet nanocomposites

Details A new kind of vortex pinning in superconductor / ferromagnet nanocomposites A new kind of vortex pinning in superconductor / ferromagnet nanocomposites

2006-10-04

arxiv.org/abs/cond-mat/0610105v1

Physics

Condensed Matter

Superconductivity

Submitted to PRL

Scientific paper

10.1088/0953-2048/20/9/S04

This paper reports the observation of hysteresis in the vortex pinning in a superconductor / ferromagnetic epitaxial nanocomposite consisting of fcc Gd particles incorporated in a Nb matrix. We show that this hysteretic pinning is associated with magnetic reversal losses in the Gd particles and is fundamentally different in origin to pinning interactions previously observed for ferromagnetic particles or other microstructural features.

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