EXTRACTION OF U(J) AND TIME CONSTANT FROM MAGNETIC-RELAXATION EXPERIMENTS

Authors
YU Y XU XN ZHENG ZY JIN X YAO XX
Citation
Y. Yu et al., EXTRACTION OF U(J) AND TIME CONSTANT FROM MAGNETIC-RELAXATION EXPERIMENTS, Superconductor science and technology, 10(8), 1997, pp. 568-571
Citations number
16
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter
Journal title
Superconductor science and technology → ACNP
ISSN journal
09532048
Volume
10
Issue
8
Year of publication
1997
Pages
568 - 571
Database
ISI
SICI code
0953-2048(1997)10:8<568:EOUATC>2.0.ZU;2-K
Abstract
A new method is proposed to extract U(J) from magnetic relaxation expe riments. By utilizing a linear relation between U(J) and kT In(1 + t/t (0)) we are able to derive the current density dependence of the effec tive activation energy and the time scales. The relation between the m aster curve and U(J) is discussed. It is shown that a monotonically de creasing U(J) curve can be constructed with several master curves at d ifferent temperatures.