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  • 1985-1989  (2)
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Materialart
Erscheinungszeitraum
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  • 1
    Digitale Medien
    Digitale Medien
    In situ preparation of Y-Ba-Cu-O superconducting thin films by magnetron sputtering (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 1098-1100 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Thin superconducting films of YBa2 Cu3 O7 have been prepared by magnetron sputtering from targets of sintered material in an oxygen-argon atmosphere. The compositional and structural properties were studied by Rutherford backscattering and x-ray diffraction. The films were deposited at substrate temperatures between 580 and 800 °C. It was found that the material grows in the oxygen deficient tetragonal phase. In situ heat treatment at 430 °C in pure O2 atmosphere generates the orthorhombic structure and the films on sapphire and SrTiO3 coated sapphire substrates show the full superconducting transition at 83 K.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.99222
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  • 2
    Digitale Medien
    Digitale Medien
    High-T c superconductivity in the Bi-Sr-Ca-Cu-O system (1988)
    Springer
    The European physical journal 70 (1988), S. 275-277 
    Details
    ISSN: 1434-6036
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Superconductivity with transitions near 80 K and 110 K has been observed in sintered samples of the system Bi−Ca−Sr−Cu−O. The samples were prepared from mixed powders of the oxides or carbonates of the metallic elements. It was found that the heat treatment has to be restricted to a narrow temperature range near 800 °C to obtain optimum samples with respect to superconductivity. The best samples show two transitions of equal height at 80 K and 110 K with onsets near 115 K as determined from resistivity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01317232
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