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Flux trapping in a macroscopic cylinderical hole drilled in Bi-Sr-Ca-Cu-O

Author

Listed:
  • A. Kiliç
  • K. Kiliç
  • H. Yetiş
  • M. Olutaş
  • A. Altinkok
  • H. Sözeri
  • O. Çetin

Abstract

The flux dynamics in a polycrystalline sample of Bi 1.7 Pb 0.3 Sr 2 Ca 2 Cu 3 O x with a macroscopic cylindrical hole (CH) drilled was investigated by slow transport relaxation (V-t curves) and magnetovoltage measurements (V-H curves). It was monitored that there are several discontinuities in the time evolution of quenched state in V-t curves, which was attributed to the leaving of quantized flux lines trapped through CH together with surface superconducting effects. We observed that asymmetric V-H curves demonstrate unusual remarkable counter clockwise hysteresis effects upon cycling of field. This interesting result was correlated mainly to the flux trapping inside the CH that acts as a macroscopic attractive pinning center for flux lines. Further, the hysteresis effects in V-H curves for a fixed transport current provide a direct evidence that the number of flux lines, measured dissipation and relative decrease/increase in irreversibilities could be determined by sweeping rate of external magnetic field (dH/dt) which leads also to peculiar time effects. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Suggested Citation

  • A. Kiliç & K. Kiliç & H. Yetiş & M. Olutaş & A. Altinkok & H. Sözeri & O. Çetin, 2006. "Flux trapping in a macroscopic cylinderical hole drilled in Bi-Sr-Ca-Cu-O," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 50(4), pages 565-569, April.
    • Handle: RePEc:spr:eurphb:v:50:y:2006:i:4:p:565-569
    DOI: 10.1140/epjb/e2006-00180-3
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