Influence of the reaction conditions on the formation of Tl(Re)-Ba-Ca-Cu-O superconducting thin films by thallination in open system

• Authors: Agáta Dujavová , Michaela Valeriánová , Vladimír Štrbík , Zuzana Matkovičová , Gustav Plesch , Ivan Kostič
• Languages of publication: EN

Abstracts

EN

Rhenium avoids air degradation of the target as well as of precursor thin films during the preparation of high temperature Tl-based superconductors. Addition of Re has been used during synthesis of oriented Tl(Re)-Ba-Ca-Cu-O films. High temperature superconducting Tl-based thin films were prepared by a two step method combining RF magnetron sputtering and ex-situ thallination. Precursors with a composition of Re0.1Ba2Ca2Cu3Ox were deposited on a CeO2 buffered R-plane sapphire substrate. The sputtered films were prepared at room temperature in an Ar atmosphere. The thallination of the precursor films was performed in a one zone configuration, where both the pellet and precursor film were kept at the same temperature. The thallination temperature varied in the range of 850–880°C and samples were held for 30, 45 and 60 min at this temperature in a flowing oxygen atmosphere. Besides Tl-2212, X-ray diffraction reveals the possibility of also preparing the Tl-2223 phase, which was until now not reported in a Re doped form.

Keywords

EN

Tl-based superconducting film; Tl-2212; Tl-2223; Re-doping

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2007
• Volume: 5
• Issue: 2
• Pages: 229-235

Dates

published

1 - 6 - 2007

online

1 - 6 - 2007

Contributors

author

Agáta Dujavová

author

Michaela Valeriánová

• Institute of Electrical Engineering, SAS, SK-841 04, Bratislava, Slovakia

author

Vladimír Štrbík

• Institute of Electrical Engineering, SAS, SK-841 04, Bratislava, Slovakia

author

Zuzana Matkovičová

• Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, SK-842 15, Bratislava, Slovakia

author

Gustav Plesch

• Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, SK-842 15, Bratislava, Slovakia

author

Ivan Kostič

• Institute of Informatics, SAS, SK-845 07, Bratislava, Slovakia

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Identifiers

DOI

10.2478/s11534-007-0009-6