Microstructure and Microwave Properties of Tl 2 Ba 2 CaCu 2 O 8 Thin Films on NdGaO 3

High-quality epitaxial Tl 2 Ba 2 CaCu 2 O 8 superconducting thin films have been grown on NdGaO 3 (001) by a two step process. One film, annealed at 850°C, shows interdiffusion of Ga by secondary ion mass spectroscopy, resulting in an incomplete AC susceptibility transition at 80 K. For films anneal...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1991-08, Vol.30 (8A), p.L1359
Main Authors: Young, K. H., Negrete, G. V., M. M. Eddy, M. M. Eddy, E. J. Smith, E. J. Smith
Format: Article
Language:English
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Summary:High-quality epitaxial Tl 2 Ba 2 CaCu 2 O 8 superconducting thin films have been grown on NdGaO 3 (001) by a two step process. One film, annealed at 850°C, shows interdiffusion of Ga by secondary ion mass spectroscopy, resulting in an incomplete AC susceptibility transition at 80 K. For films annealed at lower temperature, excellent crystallinity and transport properties were obtained. Ground plane substitution of the film in a 5 GHz microstrip resonator indicated worse microwave performance than similar films on LaAlO 3 (001) substrates. The 2.3 GHz resonator made from the film on NdGaO 3 gave significantly worse quality factor ( Q ) values (1850) than those made on LaAlO 3 .
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.30.L1359