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
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.