Multilayer deposition of Tl-Ba-Ca-Cu-O films
- 8 August 1988
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (6) , 523-525
- https://doi.org/10.1063/1.100624
Abstract
Thin films of Tl‐Ba‐Ca‐Cu‐O with different atomic ratios and a thickness of about 2 μm have been prepared by a sequential thermal evaporation method on alumina substrates followed by a heat treatment in an environment containing O2 and Tl. The results showed that films with a superconducting onset temperature of about 120 K and a zero resistance temperature of 85 K can be obtained with the following Tl:Ca:Ba:Cu ratios: 2:2:2:3 or 2:2:2:4. Films with a superconducting transition onset at 115 K and a zero resistance temperature of 74 K were also obtained by heating Tl‐free multilayer films in the environment containing O2 and Tl. It was also found that this new material was more resistant to water.Keywords
This publication has 4 references indexed in Scilit:
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