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 proceeding › Other contribution
Published
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 language | English |
|---|---|
| Title of host publication | Applied Superconductivity 1995, Vols. 1 and 2: Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications |
| Pages | 797-800 |
| Number of pages | 4 |
| Volume | 148 |
| Publication status | Published - 1995 |
Publication series
| Name | Institute of Physics Conference Series |
|---|
ID: 17060796