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Flux pinning in silver-doped YBCO.

Author(s) : HARRISON J. P., KOHL M., SALOMONS G.

Type of article: Article

Summary

The measurements show that silver doping brings about a significant increase in the intergrain flux depinning temperature, from about 70 to about 80 K in a field of 2 T with a broad peak at single monolayer coverage of silver on the grains. The remanent magnetization of the samples, following a field increase to about 1.5 T and decrease back to zero field, doubles with the addition of the silver. The relaxation of the remanent magnetization was measured and interpreted. It was found that the pinning energy decreased with silver doping, seemingly in conflict with the increase in depinning temperature and critical current density. This paradox is understood in terms of the field dependence of the pinning energy.

Details

  • Original title: Flux pinning in silver-doped YBCO.
  • Record ID : 1994-0045
  • Languages: English
  • Source: Cryogenics - vol. 33 - n. 5
  • Publication date: 1993/05

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