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  • Artikel: DFG Deutsche Nationallizenzen  (4)
  • 1990-1994  (4)
  • 1990  (4)
Datenquelle
  • Artikel: DFG Deutsche Nationallizenzen  (4)
Materialart
Erscheinungszeitraum
  • 1990-1994  (4)
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Synthesis and properties of high-Tc YBa2Cu3O7−y oriented thin films (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 3493-3497 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The a- and c-axis-oriented YBa2Cu3O7−y thin films were prepared by rf magnetron sputtering technique. The characterization of the thin films was carried out by inductively coupled plasma atomic emission spectroscopy, x-ray diffraction, and scanning Auger profile techniques. The Tc, Tc(H), Jc(H), and Hc2 -T(near Tc) were measured by the standard dc four-probe method. It was found that very strong anisotropy of this material was manifested in its superconducting properties, especially for c-axis-oriented thin films. It was also found that Jc depends very strongly upon stoichiometric composition 123, preferential orientation of the film, and the characteristic of the film-substrate interface.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.346360
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Critical current measurements in YBa2Cu3O7−x thin film grown on LaAlO3 substrate (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 884-886 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The critical current density Jc(B,T) of epitaxial YBa2Cu3O7−x (YBCO) thin films on LaAlO3 was measured under different applied magnetic fields (0–7 T) with the temperature ranging from 65 to 79 K. At 65 K, the zero-field critical current density of the best film was 5.8×106 A/cm2; even at magnetic fields up to 7 T, Jc could reach as high as 1×106 A/cm2. Strong anisotropy was observed at 79 K. The anisotropy behavior diminished with the decrease of temperature. Experimental results showed that Jc was proportional to (Tc−T)3/2 ; this was in accordance with the theoretical explanation by the Josephson junction model for granular superconductors.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.346784
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 3
    Digitale Medien
    Digitale Medien
    The reaction of atomic fluorine with formyl fluoride: An experimental and theoretical study (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 276-286 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: The rate coefficient for the reaction of F+HFCO has been determined over the temperature range 298–368 K by monitoring the appearance rate of HF infrared chemiluminescence using the infrared multiphoton dissociation-infrared chemiluminescence technique. Results, expressed in the Arrhenius form k(T) =4.4±2.6×10−11 exp[−1800±400/RT] cm3 molecule−1 s−1, are compared with the barrier height calculated using ab initio molecular orbital theory. The rate coefficient is theoretically discussed with the aid of essential features of the potential energy surface for the F+HFCO system and the potential importance of the reaction is considered. A rate coefficient for deactivation of excited HF by HFCO is reported as 1.2±0.2×10−12 cm3 molecule−1 s−1.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.459601
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  • 4
    Digitale Medien
    Digitale Medien
    Kinetics and mechanism of ilmenite reduction with carbon monoxide (1990)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 36 (1990), S. 1433-1438 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Zusätzliches Material: 15 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690360917
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