FLUX-PINNING IN OXYGEN-DEFICIENT MELT-TEXTURED YBA2CU3O7-X

Authors
WISNIEWSKI A CZURDA C BARAN M WEBER HW ZHANG PX ZHOU L
Citation
A. Wisniewski et al., FLUX-PINNING IN OXYGEN-DEFICIENT MELT-TEXTURED YBA2CU3O7-X, Journal of magnetism and magnetic materials, 144, 1995, pp. 1299-1300
Citations number
5
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
144
Year of publication
1995
Part
2
Pages
1299 - 1300
Database
ISI
SICI code
0304-8853(1995)144:<1299:FIOMY>2.0.ZU;2-O
Abstract
Critical current densities (J(c)) and the irreversibility lines (ILs) of 7 melt-textured samples with different oxygen content (27.4 K < T-c < 92.4 K) were investigated. The values of J(c)(ab) decrease systemat ically with increasing oxygen deficiency. All the ILs shift to lower f ields and temperatures with decreasing oxygen content. A crossover in the slope of log(H-irr) versus log(1 - T-irr/T-c) as well as pronounce d changes in the shape and anisotropy of the ILs were observed.