INFLUENCE OF WEAK SELF-FIELD EFFECT ON CALCULATED ACTIVATION-ENERGY FOR SUPERCONDUCTING THIN-FILM

Citation
Xn. Xu et al., INFLUENCE OF WEAK SELF-FIELD EFFECT ON CALCULATED ACTIVATION-ENERGY FOR SUPERCONDUCTING THIN-FILM, Chinese Physics Letters, 14(8), 1997, pp. 617-620
Citations number
9
Categorie Soggetti
Physics
Journal title
ISSN journal
0256307X
Volume
14
Issue
8
Year of publication
1997
Pages
617 - 620
Database
ISI
SICI code
0256-307X(1997)14:8<617:IOWSEO>2.0.ZU;2-#
Abstract
When the applied held B-a = mu(0)H(a)(H-a > H-p) is perpendicular to t he surface of a disk-shaped superconducting thin him with the full pen etrated held H-p, the radius R, and the thickness d, a quantitative re lation between the average field (B) and the magnetization M is descri bed by [B] = mu(0)[H-a + (0.81d/R)M] for R much greater than d, where the term mu(0)(0.81d/R)M also is the average self-field of the film. C ombining this relation with the magnetic flux conservation equation an d the Arrhenius relation, the effective activation energy is extracted from the experimental magnetization relaxation and the dynamic magnet ization relaxation, respectively.