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Journal of Materials Science

, Volume 29, Issue 10, pp 2713–2718 | Cite as

Effect of silver in Y1Ba2Cu3O7−x samples

  • D. H. Galván
  • M. Avalos-Borja
  • M. H. Farías
  • L. Cota-Araiza
  • A. Reyes
  • J. Cruz-Reyes
  • E. A. Early
  • G. Nieva
  • M. De Andrade
  • M. B. Maple
Papers

Abstract

Two techniques for preparing Y-Ba-Cu-O/Ag specimens are presented: (a) solid-state reaction, and (b) normal precursors dissolved in hot concentrated nitric acid and dried in air. The samples are characterized by scanning electron microscopy (SEM), scanning Auger, X-ray diffraction, optical microscopy and electrical resistivity measurements. In comparison with a normal 1-2-3 superconductor it was found that the normalized resistance [R(T)/R(280 K)] decreases for both preparation methods. The material retained a high initial temperature of superconductivity, Tc, for a maximum of 6% w/o Ag2O during solid-state reaction and 6.5% w/o Ag2O for samples dissolved in hot concentrated nitric acid and dried in air.

Keywords

Polymer Microscopy Electron Microscopy Scanning Electron Microscopy Optical Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • D. H. Galván
    • 1
  • M. Avalos-Borja
    • 1
  • M. H. Farías
    • 1
  • L. Cota-Araiza
    • 1
  • A. Reyes
    • 1
  • J. Cruz-Reyes
    • 2
  • E. A. Early
    • 3
  • G. Nieva
    • 3
  • M. De Andrade
    • 3
  • M. B. Maple
    • 3
  1. 1.Laboratorio de EnsenadaInstituto de Fisica-UNAMEnsenada, Baja CaliforniaMexico
  2. 2.Facultad de Ciencias Químicas-UABCTijuana Baja CaliforniaMexico
  3. 3.Department of Physics and Institute of Pure and Applied Physical SciencesUniversity of CaliforniaLa JollaUSA

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