Shape Distortion by Irreversible Flux-Pinning-Induced Magnetostriction
Superconductivity
2009-10-30 v1 Materials Science
Abstract
Exact analytical results are obtained for the flux-pinning-induced magnetostriction in cylindrical type-II superconductors placed in parallel magnetic field. New modes of irreversible deformation are found: In contrast to the circular cylinder where shape is conserved, it is shown that a square cross-section deforms with considerable distortion. During a field cycle both concave, convex, and even more complicated distortions are predicted. Strong implications for dilatometric measurements on crystals are emphasized. The main results are valid for any critical-state model, j_c = j_c(B).
Keywords
Cite
@article{arxiv.cond-mat/9712091,
title = {Shape Distortion by Irreversible Flux-Pinning-Induced Magnetostriction},
author = {T. H. Johansen and J. Lothe and H. Bratsberg},
journal= {arXiv preprint arXiv:cond-mat/9712091},
year = {2009}
}
Comments
4 pages, 4 graphs