On the pinning performance analysis in bulk RE-123 twin-free superconductors

M. Jirsa, P. Petrenko, X. Yao, M. Muralidhar

Research output: Contribution to journalArticle

Abstract

We show that the replacement of Bc2 by the irreversibility field in the classical scaling law for the sake of high-Tc superconductors (HTSCs) magnetic data interpretation is not an ideal solution. Field normalization to the peak position is more exact but it also gives rise to parameter values that are too high to be in any correlation with the original theory. Model of the thermally activated vortex dynamics, based on the super-current scaling and on the logarithmic pinning potential, works equally well but with only one reasonably ranging parameter, directly accessible from experiment. This parameter can thus serve as a classification factor for the pinning efficiency of bulk twin-free HTSCs.

Original languageEnglish
Pages (from-to)353-356
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - 2007 Oct 1

Keywords

  • Bulk RE-123 superconductors
  • Peak effect
  • Pinning classification
  • Pinning force scaling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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