FLUX-TRAPPING PHENOMENA IN SINTERED TUBES OF HIGH-TC SUPERCONDUCTORS


CELEBI S. , LeBlanc M.

PHYSICAL REVIEW B, cilt.49, ss.16009-16024, 1994 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 49 Konu: 22
  • Basım Tarihi: 1994
  • Doi Numarası: 10.1103/physrevb.49.16009
  • Dergi Adı: PHYSICAL REVIEW B
  • Sayfa Sayıları: ss.16009-16024

Özet

The remanent magnetic flux density trapped in the cavity and in the wall of sintered tubes of Y-Ba-Cu-0 and Bi-Sr-Ca-Cu-0 was measured as a function of H(cool), the axial magnetic field present during field cooling and then removed, and of H(cycle), the axial magnetic field impressed and removed after zero-field cooling. For both procedures the two specimens exhibit very different behavior. A simple critical-state model which takes into account the return field of the magnetized grains quantitatively reproduces all of our observations and the corresponding data reported by others.