OXYGEN-CONTENT, MICROSTRUCTURE AND TC VARIATION OF LA1.84SR0.16CUOY

Authors
CANEIRO A SERAFINI D PRADO F FERRARI H JIMENEZCRESPO A ABRIATA JP
Citation
A. Caneiro et al., OXYGEN-CONTENT, MICROSTRUCTURE AND TC VARIATION OF LA1.84SR0.16CUOY, Solid state communications, 88(5), 1993, pp. 355-359
Citations number
17
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
88
Issue
5
Year of publication
1993
Pages
355 - 359
Database
ISI
SICI code
0038-1098(1993)88:5<355:OMATVO>2.0.ZU;2-B
Abstract
Thermodynamic measurements of equilibrium oxygen partial pressure (P(O 2)) as a function of oxygen content at 1173K have been performed on La 1.84Sr0.16CuOy. These measurements confirmed the presence of traces of an impurity phase of the type La8-xSrxCu8O20 (an oxygen-deficient, pe rovskite structure) which is always present in sintered La2-xSrxCuOy t ype oxides. Samples of La1.84Sr0.16CuOy with controlled oxygen content were prepared taking into account the amount of oxygen related to thi s impurity phase. The superconducting properties of these samples were studied through ac susceptibility and a correlation where T(c) decrea ses as the oxygen content decreases was found.