Preparation and Properties of High-Tc Superconducting Bi(Pb)-Sr-Ca-Cu-O Thick Films by a Melting-Quenching-Annealing Method

  • M. E. Gómez
  • L. F. Castro
  • G. Bolaños
  • O. Morán
  • P. Prieto
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 62)

Abstract

We have prepared superconducting Bi(Pb)-Sr-Ca-Cu-O thick films (30–100 μm) on MgO (100) substrates using a rapid melting-quenching-ànnealing method. A layer of Bi1.6Pb.4Sr2Ca2- Cu3.6Ox mixture on MgO (100) substrates was melted at 1050 °C for typically 2 min. The samples were then directly cooled to room temperature. After an annealing at 860 °C for about lOh in air the films exhibited superconductivity with Tc(zero) = 108 K. The critical current densities at 77 K and zero magnetic field were about 103 A/cm2. Morphology and composition of the films were investigated by SEM, EDX and X-ray diffraction measurements.

Keywords

Crystallization Recrystallization Hull Perovskite Colombia 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • M. E. Gómez
    • 1
  • L. F. Castro
    • 1
  • G. Bolaños
    • 1
  • O. Morán
    • 1
  • P. Prieto
    • 1
  1. 1.Departamento de FísicaUniversidad del ValleCali.Colombia

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