Effects of magnetic field and temperature on the critical current hysteresis in tl-ca-ba-cu-o thin films

Hung Lun Chang, Jenh Yih Juang, Sy Hwang Liou, Tzeng Ming Uen, Yih Shun Gou

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The behavior of the critical current density of Tl-Ca-Ba-Cu-O superconducting thin films in a cycling magnetic field was investigated. The hysteresis of the transport Jcmanifested similar features to those found in polycrystalline Y-Ba-Cu-O and granular Nb, Al thin films in zero-field cooling. However, a novel result of the transport Jcin field-cooled samples has been observed. The results were attributed to the presence of a saturated trapped magnetic flux in the weak-link network. The effects of temperature on both the trapped flux and the transport Jcsuggest the existence of various states of the trapped flux in the Tl-based superconducting thin films.

Original languageEnglish (US)
Pages (from-to)2037-2040
Number of pages4
JournalJapanese Journal of Applied Physics
Volume29
Issue number11
DOIs
StatePublished - Nov 1990

Keywords

  • Critical current
  • Flux trapping
  • Hysteresis
  • Tl-Ca-Ba-Cu-O thin films

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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