SUPPRESSION OF SUPERCONDUCTIVITY IN ORTHORHOMBIC LA(2-X)M(X)CUO(4) (M=CA,SR)

Authors
DABROWSKI B JORGENSEN JD HITTERMAN RL WAGNER JL WANG Z HUNTER BA RADAELLI PG HINKS DG
Citation
B. Dabrowski et al., SUPPRESSION OF SUPERCONDUCTIVITY IN ORTHORHOMBIC LA(2-X)M(X)CUO(4) (M=CA,SR), Physica. C, Superconductivity, 235, 1994, pp. 339-340
Citations number
5
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
1
Pages
339 - 340
Database
ISI
SICI code
0921-4534(1994)235:<339:SOSIOL>2.0.ZU;2-8
Abstract
We have extended the calcium sold-solubility limit in La2-xCaxCuO4 to x = 0.2 using synthesis at high oxygen pressure. The superconducting t ransition temperature increases with doping to 34 K at x = 0.15 and is suppressed for x > 0.15, similar to the Sr-substituted material. At a fixed doping level, the optimum superconducting properties (the highe st T-c) ate found for flat and square CuO2 planes.