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  • 1
    Electronic Resource
    Electronic Resource
    Superconducting YBa2Cu3O7−δ thin films with three different orientations (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 4217-4220 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial thin films of YBaCuO have been prepared with (1) the a axis perpendicular to (100) SrTiO3 ; (2) the c axis perpendicular to (100) SrTiO3 ; and (3) the [110] axis perpendicular to (110) SrTiO3. Films were fabricated using a multilayer deposition technique involving three electron guns containing Y, BaF2, and Cu under a pressure of 5×10−5 Torr of O2. As deposited films, which contained polycrystalline and amorphous regions, were later annealed in a furnace under a flowing O2-H2 O atmosphere. X-ray diffraction patterns as well as scanning electron microscopy and high-resolution electron microscopy images confirm that the films are highly oriented, essentially epitaxial. The a-axis oriented film exhibits zero resistance at 90 K and a critical current density of 2.9×106 A/cm2 at 4.2 K while the c-axis oriented film exhibits a Tc of 88 K and a Jc of 0.9×107 A/cm2 at 4.2K; the Jc values were determined magnetically. The [110]-orientation film shows the sharpest transition with a transition width of 1 K and zero resistance at 85 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344932
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Shear angle of vector magnetic field - AAnS 34/2 (1993)291-294
    Amsterdam : Elsevier
    Chinese Astronomy and Astrophysics 17 (1993), S. 475-476 
    Details
    ISSN: 0275-1062
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0275-1062(93)90026-L
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Turbulent flow development characteristics in channel inlets (1973)
    Springer
    Flow, turbulence and combustion 27 (1973), S. 425-439 
    Details
    ISSN: 1573-1987
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The turbulent flow characteristics in the inlet regions of circular pipes and parallel plates are considered separately in this paper. The momentum integral equation of the boundary layer near the wall and the overall continuity equation for the flow are solved. The variation of the shape factor is taken into consideration in the solution by supplementing the two basic equations by an entrainment equation. Numerical solutions and available experimental results show that the present theory is in good agreement with experimental data for flow in both pipe and parallel plates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00382505
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    Paper (German National Licenses)
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