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THE EFFECT OF DISLOCATIONS AND TWIN BOUNDARIES ON CRITICAL FIELDS IN SUPERCONDUCTING NIOBIUM.

[In Russian. / En russe.]

Author(s) : DOLGIN A. M.

Type of article: Article

Summary

THE MAGNETIC FIELD BEHAVIOUR OF NIOBIUM SINGLE CRYSTALS CONTAINING EITHER DISLOCATIONS OR TWIN BOUNDARIES RESULTING FROM PLASTIC STRAIN AT 4.2 K IS STUDIED. THE UPPER CRITICAL FIELDS OF SUPERCONDUCTIVITY ARE FOUND TO GROW DUE TO AN INCREASE IN THE GINSBURG-LANDAU PARAMETER FOR A CRYSTAL WITH DISLOCATIONS OR TO THE DEVELOPMENT OF LOCALIZED TWINNING PLANE SUPERCONDUCTIVITY (TPS) FOR A CRYSTAL WITH TWIN BOUNDARIES. HIGH ELECTRIC FIELDS OF TPS IN DEFORMATION TWINS WHICH EXCEED APPRECIABLY THOSE OF TWIN BOUNDARIES IN BICRYSTAL AS WELL AS A PROFOUND EFFECT OF STRAINED SAMPLES HEATING ON THE TPS CRITICAL PARAMETERS CAN BE ACCOUNTED FOR BY THE EXISTENCE OF HIGH PLASTIC STRAIN-INDUCED INTERNAL STRESSES IN THE VICINITY OF TWIN BOUNDARIES.

Details

  • Original title: [In Russian. / En russe.]
  • Record ID : 1988-2183
  • Languages: Russian
  • Source: Fiz. nizk. Temp. - vol. 13 - n. 10
  • Publication date: 1987
  • Document available for consultation in the library of the IIR headquarters only.

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