International Conference on Thin Film Deposition of Oxide Multilayers Hybrid Structures

J. Phys. IV France 11 (2001) Pr11-175-Pr11-179
DOI: 10.1051/jp4:20011128

Hg-cuprate thin films prepared using Re and fluorides based precursor thin films

S. Chromik¹, D. De Barros², V. Strbik¹, P. Odier², A. Sin², F. Hanic³ and I. Kostic<sup>4

1</sup>  Institute of Electrical Engineering, Slovak Academy of Sciences, Dubravska Cesta 9, 84239 Bratislava, Slovakia
²  Laboratoire de Cristallographie, CNRS, 25 avenue des Martyrs, BP. 166, 38042 Grenoble cedex 09, France
³  Institute of Measurement Science, Slovak Academy of Sciences, Dubravska Cesta 9, 84219 Bratislava, Slovakia
⁴  Institute of Informatics, Slovak Academy of Sciences, Dubravska Cesta 9, 84237 Bratislava, Slovakia

Abstract
We present the preparation, structural and electrical properties of Hg-based superconducting thin films prepared by two step process from different precursor films. Ba-Ca-Cu-(O,F) precursor films were prepared by sequential evaporation method and Re-Ba-Ca-Cu-O precursor films by high-pressure sputtering on CeO₂ buffered R-plane sapphire substrates. Then, Hg-Re-Ba-Ca-Cu-O pellets as a source of Hg-vapour were applied in heat-treatment. The Hg cuprate thin films with maximum zero resistance critical temperature T_co = 119.8 K were continuous with a sufficient adhesion for patterning. In the case of the films prepared by Re-doped precursor film we observed uniform surface morphology and superconducting properties.

© EDP Sciences 2001