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  • Electronic Resource  (3)
  • 1995-1999  (3)
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  • Electronic Resource  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Superconductivity enhanced by Hg fission (1997)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 389 (1997), S. 243-243 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] For the successful application of high-temperature copper oxide superconductors, the problem of the ease of motion of magnetic vortices (quantized flux lines) within the material must be solved. The motion results in finite electrical resistance which prevents the desired loss-free conduction ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/38415
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Enhancement of transport critical current densities at 75 K in (Bi,Pb)2Sr2Ca2Cu3Oy/Ag tapes by means of fission tracks from irradiation by 0.8 GeV protons (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 67 (1995), S. 130-132 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The transport critical current density Jc of oxide-powder-in-tube mono- and multifilamentary Bi-2223/Ag tapes has been determined before and after irradiation by 0.8 GeV protons at fluences up to 7.0×1016 protons/cm2. Proton-induced fission of the Bi nuclei produced up to 8.6×1013 fissions/cm3, creating long tracks at densities equivalent to matching fields up to 1.1 T. Relative to unirradiated tapes, Jc values at 75 and 64 K show no decrease in self field, indicating no breakdown of intergranular coupling, and show large, dose-dependent enhancements in magnetic fields oriented parallel to the tape normal. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.115506
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of MeV ion irradiation of thin cubic boron nitride films (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 2980-2987 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Adherent boron nitride thin films with a high cubic phase content (up to about 90%) were synthesized over large areas by means of ion assisted evaporation. Besides the well known superior properties of cubic boron nitride (c-BN) nearly nothing is known about the behavior of c-BN under MeV ion irradiation where the ions penetrate through the thin film and come to rest far away in the substrate. Therefore, exploratory MeV ion implantation experiments into as-deposited c-BN rich films were conducted at room temperature. Ions with different masses were chosen to study the effect of the nuclear and electronic stopping processes on the highly cubic BN films. Furthermore the influence of various ion doses (3.5×1013–2.0×1017 ions/cm2) on the cubic structure was investigated. To get an insight into the effects of the different post-deposition treatments, the as-deposited and ion implanted films were analyzed by Fourier transformed infrared spectroscopy, Rutherford backscattering, x-ray diffraction, and Auger electron spectroscopy. Depending on the ion dose, the heavy Xe ion implantation results in four different regimes for the resulting material. The implantation induced the total number of displacements per unit volume as an essential measure of the effect of the postdeposition treatment. Depending on the total number of displacements per unit volume the cubic BN structure can be transformed into a hexagonal BN dominated network. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367053
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