Citation
S. Celebi et al., Determination of the material parameters of a melt-textured YBCO superconductor by DC magnetization analysis, J ALLOY COM, 298(1-2), 2000, pp. 285-290
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN journal
09258388
→ ACNP
Volume
298
Issue
1-2
Year of publication
2000
Pages
285 - 290
Database
ISI
SICI code
0925-8388(20000228)298:1-2<285:DOTMPO>2.0.ZU;2-1
Abstract
We report the isothermal magnetization cut-yes of a YBCO superconducting sa
mple prepared by a flame-quench-melt-growth (FQMG) method. Hysteresis loops
have been calculated and analyzed in the framework of a critical state mod
el including the Meissner current. The bulk critical current and Meissner c
urrent as a function of applied field were extracted, and the volume fracti
on of the grains, f(g), has been estimated to be 0.64 from a comparison of
the theoretical and experimental M-H hysteresis loops. The lower critical f
ield, mu(0)H(c1), was found to be 14.4 mT. (C) 2000 Elsevier Science S.A. A
ll rights reserved.