SURFACE PINNING EFFECTS IN YBA2CU3O7 BULK SAMPLE

Authors
ZENG ZY SUN AM XU XN YU Y DING SY YAO XX
Citation
Zy. Zeng et al., SURFACE PINNING EFFECTS IN YBA2CU3O7 BULK SAMPLE, Physica. C, Superconductivity, 282, 1997, pp. 2139-2140
Citations number
9
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
4
Pages
2139 - 2140
Database
ISI
SICI code
0921-4534(1997)282:<2139:SPEIYB>2.0.ZU;2-B
Abstract
The difference between thermal activation of vortices over surface bar rier and over bulk pinning centers is discussed. It is concluded that small reduction of the applied field can affect these two relaxation p roceedings quite differently. Based on this conclusion, a method for d etecting surface pinning effect is proposed. Experimental results on a melt grown YBa2Cu3O7 bulk sample support our proposal.