Magnetic relaxation in YBa2Cu3O7 high-Tc superconductor system samples prepared by a modified melt-textured growth method was investigated. The relaxation rate S, given by M¿1 dM/d log(t), is independent of the magnetic field and temperature below a given temperature T0, which decreases with increasing magnetic field. The pinning potential, evaluated from temperature-independent S values, increases with temperature, but the behavior is not intrinsic. However, at temperatures above T0, S increases with temperature, giving a potential dependent on log(Jc).
Published in:
Magnetics in Japan, IEEE Translation Journal on
(Volume:8
,
Issue:
3
)
Date of Publication:
March 1993
- Page(s):
-
192
-
197
- ISSN :
-
0882-4959
- Digital Object Identifier :
-
10.1109/TJMJ.1993.4565602
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
16 July 2008
- Issue Date :
-
March 1993