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  • 1
    Electronic Resource
    Electronic Resource
    Preparation of YBa2Cu3O7 − δ Thin Films by the Self-Template Sputtering Method (1998)
    Springer
    Journal of superconductivity 11 (1998), S. 737-741 
    Details
    ISSN: 1572-9605
    Keywords: High-temperature superconductor ; thin film ; YBaCuO
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Using the self-template technique, c-axis-oriented epitaxial YBa2Cu3O7 − δ thin films have been prepared in situ on LaAlO3 substrate by the d.c. magnetron sputtering method. The properties of thin film dependence on the deposition conditions of the two-step self-template method have been systematically investigated. By optimizing the parameters, high-quality YBCO thin films with T c0 ≥ 90 K, ΔT c ≤ 1 K, R s (77 K, 10 GHz)∼500 μΩ were reproducibly obtained. The best sample grown under optimal conditions gave a low R s of 330 μΩ at 77 K, 10 GHz, which can be used in a microwave field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022645224036
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of Sputtering Parameters on Superconducting Properties of GdBaCuO Epitaxial Thin Film Deposited by ICP Method (1998)
    Springer
    Journal of superconductivity 11 (1998), S. 317-322 
    Details
    ISSN: 1572-9605
    Keywords: Superconductor ; thin film ; GdBaCuO
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Thin films of GdBaCuO (GBCO) have been deposited in situ onto LaAlO3 single crystal substrates by inverted cylindrical sputtering pattern (ICP). The superconductive properties of the thin films' dependence on the substrate temperature and sputtering pressure have been systematically investigated. By optimization of the deposition parameter, high-quality c-axis epitaxial GBCO thin films of T c0〉92 K were reproducibly grown. The T c of the best sample is as high as 93.2 K. Upon changing the target composition to GdBa2Cu4O y (Gd124), it was observed that the samples always show some a-axis oriented films, implying that excess copper would favor a-axis growth in thin films. The superconductivity of the thin films under higher substrate temperature (T s〉800°C) was clearly improved by the procedure of special post-oxygenization at 400°C with an ozone atmosphere. This is very useful for preparing large-area thin films of GBCO.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022652505611
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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