MAGNETIC AND EPR STUDIES OF OXYGENATED AND NONOXYGENATED LABASRCU3O6+X COMPOUNDS IN THE TETRAGONAL PHASE

Authors
GUSKOS N LIKODIMOS V KURIATA J CALAMIOTOU M WABIA M PARASKEVAS SM WINDSCH W METZ H KOUFOUDAKIS A MITROS C GAMARISEALE H PSYHARIS V NIARCHOS D
Citation
N. Guskos et al., MAGNETIC AND EPR STUDIES OF OXYGENATED AND NONOXYGENATED LABASRCU3O6+X COMPOUNDS IN THE TETRAGONAL PHASE, Physica status solidi. b, Basic research, 180(2), 1993, pp. 491-501
Citations number
32
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. b, Basic research → ACNP
ISSN journal
03701972
Volume
180
Issue
2
Year of publication
1993
Pages
491 - 501
Database
ISI
SICI code
0370-1972(1993)180:2<491:MAESOO>2.0.ZU;2-P
Abstract
Oxygenated and non-oxygenated LaBaSrCU3O6+x ceramics in the tetragonal phase are studied using X-ray, EPR, and magnetic measurements. A Meis sner signal for the oxygenated sample corresponding to almost perfect diamagnetism is measured below 35 K. However, EPR data indicate that a t least some parts of the sample become superconducting already below 62 K. Magnetic susceptibility of the non-oxygenated sample exhibit a s ignificant paramagnetic contribution attributed to Cu(1) ions ferromag netically coupled to the Cu(2) planes.