Effect of lithium doping on the properties of Tl-based superconductors

Kayed T., Ozkan H., Gasanly N.

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol.14, no.9, pp.738-740, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 9
  • Publication Date: 2001
  • Doi Number: 10.1088/0953-2048/14/9/322
  • Journal Name: SUPERCONDUCTOR SCIENCE & TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.738-740
  • Middle East Technical University Affiliated: Yes

Abstract

The effects of lithium doping on the formation and properties of the T1-based superconductors have been studied. Lithium atoms up to around 3 mol.% have been added to the oxides of nominal composition Tl1.8Ba2Ca2.2Cu3Ox, and the usual solid-state reaction method has been applied. Lithium additions in the range 0.23-0.29 mol.% increase the fraction of the Tl-2223 phase and significantly improve the critical temperature of the samples. Higher amounts of lithium additions diminish the Tl-2223 phase, reduce the fraction of the Tl-2212 phase, and cause separate non-superconducting phases to be formed.