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  • Articles: DFG German National Licenses  (2)
  • 1990-1994  (2)
  • 1993  (2)
  • 36.40.+d  (1)
  • large area  (1)
  • 65H10
  • 1
    Electronic Resource
    Electronic Resource
    Preparation of large-area high-quality YBCO thin films by pulsed laser deposition with Si heater and composite scanning of laser and target (1993)
    Springer
    Journal of superconductivity 6 (1993), S. 335-337 
    Details
    ISSN: 1572-9605
    Keywords: High-temperature superconducting thin film ; pulsed laser ablation ; heater ; composite scanning ; large area
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We report on the successful preparation of large-area high-quality YBa2Cu3O7 superconducting thin films by pulsed excimer laser ablation with a Si heater and composite scanning of laser beam and target. The Si heater, composite scanning of laser beam and target, and experiment results are described. The temperature variation of the Si heater was 〈 ±0.5% in a 45×40 mm2 area of 900–1000 °C. Films were deposited on LaAlO3 substrates 35 mm in diameter. The thin films exhibited a thickness variation of ±2.5%; the superconducting properties wereT c0=91×0.5 K andJ c= (3.3±0.7)×106 A/cm2 at 77 K and zero magnetic field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617481
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ab initio potential energy surface for Ar 3 + (1993)
    Springer
    The European physical journal 25 (1993), S. 239-246 
    Details
    ISSN: 1434-6079
    Keywords: 31.20.Di ; 33.80.Gj ; 36.40.+d
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The potential energy surface (PES) of linear Ar 3 + is calculated at the MP4/6-31G* level including all single, double, triple and quadruple excitations. The results show that the PES of the linear Ar 3 + has a very flat valley along the asymmetric stretching vibration normal mode, ν3. A higher level quadratic configuration interaction calculation including single, double and triple substitutions QCISD (T) along this flat valley suggests that an asymmetric geometry energy minimum reported earlier based on MP2 [1] is due to symmetry breaking in UHF. The global minimum of the PES is found to be for the symmetric geometry atR ab =R bc =2.66±0.01 Å, which is in good agreement with the MRD-CI calculation [2] and expectations from our earlier photodissociation experiments [3]. The calculational results are compared with other theoretical calculations, and are discussed in the context of the photodissociation and dynamics of dissociation experiments conducted on Ar 3 + .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01426886
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    Paper (German National Licenses)
    Fulltext
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