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  • 42.65.Hw  (1)
  • Ag/Bi-2223 tape  (1)
  • High-T c superconductor  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Power and beam-width dependence of a BaTiO3: Ce self-pumped phase conjugator (1996)
    Springer
    Applied physics 62 (1996), S. 153-158 
    Details
    ISSN: 1432-0649
    Keywords: 42.65.Hw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Power and beam-width dependences of the performance of self-pumped phase conjugators using a BaTiO3: Ce crystal have been investigated. The incident beam was permitted to enter the crystal by thea-face or the +c-face. In both cases, the phase-conjugate reflectivity was observed to vary with the power and beam width of the incident beam. In the former case, two different optical beam patterns in the crystal can be observed under different conditions. Qualitative explanations are given to some of the results observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081118
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Long multifilament Bi-2223 Ag-sheathed superconducting tapes and solenoids (1994)
    Springer
    Journal of superconductivity 7 (1994), S. 829-833 
    Details
    ISSN: 1572-9605
    Keywords: High-T c superconductor ; multifilament tape ; critical bend strain ; superconducting solenoid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Multifilament Ag-sheathed BiPbSrCaCuO (2223) superconducting tapes containing 49 filaments were fabricated by the powder-in-tube route and the roll-anneal process. The transport critical current densityJ c was 1.3×104 A cm−2 at 77 K and 7×104 A cm−2 at 4.2 K in self-field. A 12-m-long tape was used to construct superconducting solenoids (50, 28, and 14 mm internal diameters) generating dc fields 380–1070 G at 4.2 K. Measurements of the variation ofJ c with field (0–1.6 T) and bend strain (0–5%) are used to explain the performance of the solenoids. The critical bend strain of tapes was about 1.5%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01320878
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Intrinsic critical current of Ag-clad (Bi,Pb)2Sr2Ca2Cu3O z tapes (1994)
    Springer
    Journal of superconductivity 7 (1994), S. 809-812 
    Details
    ISSN: 1572-9605
    Keywords: Critical current ; Ag/Bi-2223 tape ; flux creep ; ac susceptibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract True zero-field critical current densityJ c of a well-characterized BPSCCO/Ag tape has been determined by means of high-resolution ac susceptibility in the temperature range 77–110 K. The resultant values (30,000 A/cm2 at 77 K) agree well with the transportJ c of the same tape. Because of a very thin BPSCCO, the coreJ c determined from the imaginary part of the ac susceptibility is nearly the same as the zero field one. AllJ c 's follow the same (1-T/T c )n withn=1.45 dependence.J c shows an approximateH −0.5 field dependence over the explored temperature range. Accordingly, the variations ofJ c withT andH seem to be determined by the flux creep.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01320874
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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