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  • SOLID-STATE PHYSICS  (2)
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  • 1
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    Introduction of artificial pinning centres in Bi2Sr2CaCu2O8 ceramics (1995)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Considering the phase equilibrium diagram of the system Bi203-SrO-CaO-CuO, single phase 'Bi2Sr2CaCu208' ceramics have been transformed by a simple annealing procedure into multiphase samples. The transformation results in the formation of second phases and in an increase of the intra-grain critical current density at 1 T of five times. This increase is believed to express improved pinning properties of the superconducting crystals. The prepared pinning centers are believed to be e.g. coherent precipitates (Guinier-Preston-zones) within the superconducting crystals.
    Keywords: SOLID-STATE PHYSICS
    Type: NASA. Johnson Space Center, Proceedings of the 4th International Conference and Exhibition: World Congress on Superconductivity, Volume 2; p 677-68
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The oxygen content of the high-temperature superconducting compound Bi(2+x)Sr(3-y)CayCu2O(8+d) with respect to varying Ca and Bi contents (1995)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The oxygen content of Bi(2+x)Sr(3-y)Cu2O(8+d) (2212 phase) has been determined as a function of its cation concentration. With increasing Ca and Bi content the oxygen content increases and T(sub c) decreases. The oxygen content of Ca rich 2212 phase increases with decreasing annealing temperatures. The study shows that the T(sub c) of the 2212 phase primarily is controlled by its cation concentration.
    Keywords: SOLID-STATE PHYSICS
    Type: NASA. Johnson Space Center, Proceedings of the 4th International Conference and Exhibition: World Congress on Superconductivity, Volume 2; p 483-48
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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