STRUCTURE AND CHARGE LOCALIZATION IN PB2SR2TB1-XCAXCU3O8 FOR X=0.0 AND X=0.5

Authors
JORGENSEN JE ANDERSEN NH
Citation
Je. Jorgensen et Nh. Andersen, STRUCTURE AND CHARGE LOCALIZATION IN PB2SR2TB1-XCAXCU3O8 FOR X=0.0 AND X=0.5, Physica. C, Superconductivity, 235, 1994, pp. 877-878
Citations number
8
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
2
Pages
877 - 878
Database
ISI
SICI code
0921-4534(1994)235:<877:SACLIP>2.0.ZU;2-#
Abstract
The crystal structure refinements of Pb2Sr2Tb1-xCaxCu3O8 for x=0.0 and 0.5 was performed as a constrained refinement in space group Pi and b ond valency sums for the cations were calculated from the interatomic distances. Ca-doping causes an oxidation of Pb in the PbO layers but n o oxidation of Cu in the CuO2 layers was observed. Magnetic susceptibi lity measurements showed that Pb2Sr2Tb.5Ca.5Cu3O8 was none superconduc ting down to 15 Kelvin which is in contrast to superconducting Pb2Sr2Y .5Ca.5Cu3O(8).