Superconducting thallium cuprate thin films; Processing and characterisation. / Johansson, L. G.; Langer, V.; Stepantsov, E. A.; Litvinchuk, A.; Borjesson, L.; Chen, Y. F.; Claeson, T.; Ivanov, Z. G.; Olsson, E.; Tzalenchuk, A. Y.

Applied Superconductivity 1995, Vols. 1 and 2: Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications. Vol. 148 1995. p. 797-800 (Institute of Physics Conference Series).

Research output: Chapter in Book/Report/Conference proceedingOther contribution

Published
  • L. G. Johansson
  • V. Langer
  • E. A. Stepantsov
  • A. Litvinchuk
  • L. Borjesson
  • Y. F. Chen
  • T. Claeson
  • Z. G. Ivanov
  • E. Olsson
  • A. Y. Tzalenchuk

Abstract

Superconducting epitaxial Tl2Ba2CaCu2O8 (Tl-2212) thin films are reproducibly synthesised on single-crystal LaAlO3 substrates by an ex-situ process using prefilms deposited by laser ablation and treating with Tl2O(g) at 730-875 degrees C under quasi-equilibrium conditions. The influence of the composition of the Tl2O source on film properties is investigated, the best films being produced using Tl-2212 with a 2% excess of Tl2O3. Films prepared at optimum conditions with respect to Tl2O source, annealing temperature and precursor target composition are optically smooth, c-axis oriented and epitaxial, containing low levels of impurity phases. T-c's range between 105 and 108K with Delta T-c
Original languageEnglish
Title of host publicationApplied Superconductivity 1995, Vols. 1 and 2: Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications
Pages797-800
Number of pages4
Volume148
Publication statusPublished - 1995

Publication series

NameInstitute of Physics Conference Series

ID: 17060796