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  • Articles  (2)
  • Chemistry  (1)
  • electrophoretic films  (1)
  • 1A-1R, 1B–1R wheatrye double translocation
  • 61.40
  • 64
  • STRUCTURAL MECHANICS
  • Electrical Engineering, Measurement and Control Technology  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Electromagnetic properties of electrophoretic YBa2Cu3O7−δ films (1990)
    Springer
    Journal of superconductivity 3 (1990), S. 323-329 
    Details
    ISSN: 1572-9605
    Keywords: Y1Ba2Cu3O7−δ ; electrophoretic films ; grain aligned
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract In order to apply highT c superconductivity to general microwave cavities and to shielding devices for quasistationary magnetic fields, we have developed an electrophoretic coating technique. This work reports about the continuation of our experiments. More than 60 samples of electrophoretic layers deposited on silver substrates were fabricated by systematically varying the processing parameters. The r.f. surface resistance measured at 21.5 GHz and 77 K at low excitation fields is found to be a sensitive measure of the quality of the samples and falls rapidly with increasing average grain size. Textured electrophoretic layers of large grain size show the smallest sensitivity ofR s against the r.f. surface magnetic fieldH s. The magnetic sensitivitydR s /dH s is found to be in direct proportion toR s (77 K). After optimizing the sintering procedure the electrodes of the prototype cavity for a compact hydrogen maser were coated. The cavity was successfully operated at 1.42 GHz, and a surface resistance of 1 mΩ was achieved at 77 K. This compares to 4 mΩ for copper at the same temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00625275
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  • 2
    Electronic Resource
    Electronic Resource
    Photoluminescence and efficiency of Ce3+ in SrS powders (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Advanced Materials for Optics and Electronics 3 (1994), S. 131-136 
    Details
    ISSN: 1057-9257
    Keywords: II-VI compound ; SrS : Ce ; Photoluminescence ; Concentration quenching ; Phosphorescence ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: The luminescence efficiency of SrS: Ce powders in the doping range from 0.01 to 1.0 at.% was investigated by photoluminescence decay studies. The radiative decay time of Ce3+ in SrS was determined to be 27 ns. The onset of concentration quenching at concentrations higher than about 0.7 at.% has been obtained. The photoluminescence spectrum of Ce3+ exhibits two emission bands as a consequence of the ground state splitting. The Huang-Rhys factor of the 5d-4f transition was estimated to be about 6. The inhomogeneous broadening of the emission band of samples with higher doping level has been investigated by site-selective and time-resolved spectroscopy.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/amo.860030119
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