Anderson flux creep model and relaxation of persistent current in grain-aligned Y1Ba2Cu3O7-δ

J. Jung, I. Isaac, Masato Murakami, M. A K Mohamed

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Flux-creep-induced relaxation of persistent current was investigated close to Tc in a ring-shaped grain-aligned Y1Ba2Cu3O7-σ (YBCO) with the c-axis perpendicular to the ring's plane. The results revealed two distinct relaxation regimes: a steady-state logarithmic relaxation of the persistent current from an initial value Jo ≅ Jc with the energy barrier Ueff(J) = Uo(1-J/Jc) where Uo ≅ 0.4 eV, and a non-steady-state (non-lo garithmic) one from Jo < - 0.8 Jc, with Ueff(J) = constant at fixed value of time.

Original languageEnglish
Pages (from-to)2879-2880
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume235-240
Issue numberPART 5
DOIs
Publication statusPublished - 1994
Externally publishedYes

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Energy barriers
Creep
Fluxes
rings
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Anderson flux creep model and relaxation of persistent current in grain-aligned Y1Ba2Cu3O7-δ. / Jung, J.; Isaac, I.; Murakami, Masato; Mohamed, M. A K.

In: Physica C: Superconductivity and its Applications, Vol. 235-240, No. PART 5, 1994, p. 2879-2880.

Research output: Contribution to journalArticle

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