Temperature behaviour of irreversibility fields of various Hg-based superconducting ceramics

P. Schilbe, I. Didschuns, K. Lüders, G. Fuchs, M. Baenitz, K. A. Lokshin, D. A. Pavlov, E. V. Antipov, H. R. Khan

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

A variety of Hg-1223 high-Tc superconducting systems, partly substituted by lead or fluorine, are investigated by means of magnetic susceptibility measurements. As already observed earlier, the double peak structure in the imaginary parts of the ac signals below about 1 T is confirmed indicating different pinning mechanisms. Irreversibility lines are determined from the upper peak values and analysed applying the theory of Matsushita which is based on a depinning mechanism caused by thermally activated flux creep. It leads to a suitable description in the whole temperature range investigated and allows a discussion of differences of the various samples.

Original languageEnglish
Pages (from-to)1865-1867
Number of pages3
JournalPhysica C: Superconductivity and its Applications
Volume372-376
Issue numberPART 3
DOIs
Publication statusPublished - Aug 2002
Externally publishedYes

Keywords

  • Flux creep
  • High-T superconductors
  • Irreversibility line

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