Magnetic relaxation in a commercial Bi : 2223/Ag tape at 77 K

Celebi S. , LeBlanc M.

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, cilt.13, ss.1057-1061, 2000 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 13 Konu: 7
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1088/0953-2048/13/7/326
  • Sayfa Sayıları: ss.1057-1061


The evolution of the rate of flux creep along the major hysteresis envelopes and along bridges between the envelopes in a commercial Bi:2223/Ag tape at 77 K has been investigated. Magnetic relaxation rates depend strongly on the prior magnetic history. It was found that the Bi:2223/Ag tape sample has large flux creep along the hysteresis envelope. Flux creep activation energy was calculated to be 0.12 eV from the rate of decay for the remanent magnetization of 6 mT.