THE EFFECTS OF COMPOSITION, SYNTHESIS CONDITIONS, OXYGEN-CONTENT AND F DOPING ON SUPERCONDUCTIVITY AND STRUCTURE FOR R-SUBSTITUTED BI-2201

Authors
LAN YC CHE GC JIA SL WU F DONG C CHEN H ZHAO ZX
Citation
Yc. Lan et al., THE EFFECTS OF COMPOSITION, SYNTHESIS CONDITIONS, OXYGEN-CONTENT AND F DOPING ON SUPERCONDUCTIVITY AND STRUCTURE FOR R-SUBSTITUTED BI-2201, Superconductor science and technology, 9(4), 1996, pp. 297-302
Citations number
11
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter
Journal title
Superconductor science and technology → ACNP
ISSN journal
09532048
Volume
9
Issue
4
Year of publication
1996
Pages
297 - 302
Database
ISI
SICI code
0953-2048(1996)9:4<297:TEOCSC>2.0.ZU;2-H
Abstract
The effects of composition, synthesis conditions, oxygen content and F doping on superconductivity and structure for the R-substituted Bi-22 01 compound was investigated by means of XRD and measurements of super conductivity. For the Bi(1.95)Sr(2.05-x)R(x)CuO(6+y) compound (R = La, Pr, Nd and Sm), the optimum value of x for T-c is x = 0.4. When x = 0 .4, the optimum sintering temperature is 840 degrees C for R = La, Pr and Nd, 820-830 degrees C for R = Sm. T-c decreases with decreasing th e ionic radius of R. For Bi1.95Sr1.65La0.4CuO6+y, the optimum range of oxygen content is y = 0.28-0.33 and the superconductivity is improved by quenching. For F-doped Bi-2201, T-c decreases with increasing F co ntent.