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  • Articles: DFG German National Licenses  (4)
  • 1990-1994  (4)
  • 36.40.+d  (1)
  • 65H10  (1)
  • 74.70.Vy  (1)
  • 74.75+t  (1)
Source
  • Articles: DFG German National Licenses  (4)
Material
Years
  • 1990-1994  (4)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Truncated nonlinear ABS algorithm and its convergence property (1990)
    Springer
    Computing 45 (1990), S. 169-173 
    Details
    ISSN: 1436-5057
    Keywords: 65H10 ; Inexact Newton method ; nonlinear ABS algorithm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Diese Arbeit zeigt, daß der nichtlineare ABS-Algorithmus [1] als unexakte Newton-Methode [3] angesehen werden kann. Aus dieser Sicht wird der abgeschnittene nichtlineare ABS-Algorithmus hergeleitet und seine Konvergenzeigenschaft diskutiert.
    Notes: Abstract This paper shows that the nonlinear ABS algorithm [1] can be viewed as inexact Newton method [3]. From this point of view, the truncated nonlinear ABS algorithm is established and its convergence property is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02247882
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Epitaxial growth of YBa2Cu3O7−δ superconducting thin films by DC magnetron sputtering using a partially melted sintered target (1992)
    Springer
    Applied physics 54 (1992), S. 303-307 
    Details
    ISSN: 1432-0630
    Keywords: 74.75+t ; 81.15 Cd
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In situ epitaxially grown YBa2Cu3O7−δ (YBCO) thin films on (100)SrTiO3 substrates with high critical current J c=3.4 × 106 A/cm2 (at 77 K) and low microwave surface resistance R s≤37 mω (at 77 K, 50.9 GHz) are fabricated by dc magnetron sputtering using a large partially melted sintered planar target. A comparatively large homogeneous composition region can be obtained. The X-ray diffraction, X-ray double crystal diffraction, and high resolution transmission electron microscopy (HRTEM) analyses show that our deposited YBCO thin films are single crystalline containing mosaic blocks. The influence of substrate quality on the orientation behaviour of the films is also discussed. A method to improve the surface quality of the SrTiO3 substrate, which improves the properties of the thin film, is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00323855
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A new 1223-type high Tc cuprate (Tl, V) Sr2Ca2Cu3O9 (1994)
    Springer
    The European physical journal 93 (1994), S. 159-161 
    Details
    ISSN: 1434-6036
    Keywords: 74.70.-b ; 74.70.Vy ; 74.60.Mj
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new 1223-type (Tl, V)-based superconducting layered cuprate (Tl1−x V x ) Sr2Ca2Cu3O9 withx=0.25 and 0.50 has been successfully synthesized in the nearly-pure form and identified by powder X-ray diffration analyses. An excessive quantity of Tl is necessary for the preparation of the (Tl, V)-based 1223-type compound. Resistance and ac susceptibility measurements showed that the new (Tl, V)-based 1223 cuprate exhibits Tc above 110 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01316958
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    Paper (German National Licenses)
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  • 4
    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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