MAGNETIC CHARACTERISTICS OF K-DOPED, NA-DOPED AND RB-DOPED YBCO CERAMICS

Authors
NURGALIEV T MITEVA S NEDKOV I VENEVA A
Citation
T. Nurgaliev et al., MAGNETIC CHARACTERISTICS OF K-DOPED, NA-DOPED AND RB-DOPED YBCO CERAMICS, Journal of magnetism and magnetic materials, 144, 1995, pp. 1305-1306
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
1305 - 1306
Database
ISI
SICI code
0304-8853(1995)144:<1305:MCOKNA>2.0.ZU;2-4
Abstract
The magnetic behavior of Na-, K-, Rb-doped YBCO ceramic samples is inv estigated at ac magnetic field at 77 K. For small Rb and Na concentrat ions, an increase of the field-dependent component of the critical cur rent is observed. High dopant concentrations lead to deterioration of the critical parameters of the YBCO material. The results are interpre ted as due to 'soiling' of the intergranular boundary by the dopant im purities and Cu excess.