OXIDATION-STATE OF THE UNUSUAL RARE-EARTH (R=CE, PR AND TB) IN DOUBLE-LAYER HIGH-T-C SUPERCONDUCTORS

Authors
STAUB U SODERHOLM L SKANTHAKUMAR S ANTONIO MR
Citation
U. Staub et al., OXIDATION-STATE OF THE UNUSUAL RARE-EARTH (R=CE, PR AND TB) IN DOUBLE-LAYER HIGH-T-C SUPERCONDUCTORS, Journal de physique. IV, 7(C2), 1997, pp. 1077-1079
Citations number
11
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
7
Issue
C2
Year of publication
1997
Part
2
Pages
1077 - 1079
Database
ISI
SICI code
1155-4339(1997)7:C2<1077:OOTUR(>2.0.ZU;2-R
Abstract
X-ray absorption and magnetization experiments are used to describe th e oxidation states of the rare earth ions R=Ce, Pr and Tb in the doubl e layer high-T-c superconducting series RBa2Cu3O7 and Pb2Sr2R1-xCaxCu3 O8. We obtained the same oxidation states for the rare earths in these two classes of compounds, namely, R=Ce tetravalent and R=Pr and Tb tr ivalent.