Desarrollo y control de microstructuras en superconductores REBa2Cu3O7 (RE=Y,Nd) solidificados direccionalmente

• Autores: F. Sandiumenge
• Localización: Boletín de la Sociedad Española de Cerámica y Vidrio, ISSN 0366-3175, Vol. 37, Nº. 3, 1998, págs. 193-199
• Idioma: español
• Títulos paralelos:
  • Development and control of microstmctures in dîrectîonally solidified REBa2Cu3O7 (RE=Y,Nd) superconductors
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• Resumen
  • español

    Directionally solidified REBa2Cu3O7 (RE=Nd,Y) superconductors display a complex microstructure which is generated during the solidification and annealing processes. The various defects influence the superconducting properties in different ways. The present article briefly reviews the characteristics of the different defect structures and evolution in connection with their effect on the criti-cal currents. In this work, the defects are classified into strong pinning centres and currents limiting defects. Dislocation problems are addressed separately, emphasising on the generation of stacking faults, oxygenation effects and plastic deformation processing.

  • English

    Directionally solidified REBa2Cu307 (RE=Nd,Y) superconductors display a complex microstructure which is generated during the solidification and annealing processes. The various defects influence the superconducting properties in different ways. The present article briefly reviews the characteristics of the different defect structures and evolution in connection with their effect on the criti-cal currents. In this work, the defects are classified into strong pinning centres and currents limiting defects. Dislocation problems are addressed separately, emphasising on the generation of stacking faults, oxygenation effects and plastic deformation processing.