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

Celebi S. , LeBlanc M.

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol.13, no.7, pp.1057-1061, 2000 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 7
  • Publication Date: 2000
  • Doi Number: 10.1088/0953-2048/13/7/326
  • Title of Journal : SUPERCONDUCTOR SCIENCE & TECHNOLOGY
  • Page Numbers: pp.1057-1061

Abstract

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.