INTENSITY OF THE EPR-SPECTRUM IN QUENCHED SAMPLES OF YBA2CU3CX COMPOUNDS

Authors
EREMINA RM GAFUROV MR KURKIN IN
Citation
Rm. Eremina et al., INTENSITY OF THE EPR-SPECTRUM IN QUENCHED SAMPLES OF YBA2CU3CX COMPOUNDS, Physics of the solid state, 39(3), 1997, pp. 374-377
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physics of the solid state → ACNP
ISSN journal
10637834
Volume
39
Issue
3
Year of publication
1997
Pages
374 - 377
Database
ISI
SICI code
1063-7834(1997)39:3<374:IOTEIQ>2.0.ZU;2-D
Abstract
The temperature dependence of the intensity of the EPR signal is measu red in the high-temperature superconductor YBa2Cu3O6.85 and in the non superconducting compound YBa2Cu3O6.25. The copper-oxygen cluster model with spin S=2 best describes the results obtained in a sample with ap r oxygen index of 6.25. The interpretation of the experimental results for a sample with an oxygen index of 6.85, on the other hand, require s the additional assumption that the cluster S=2 also has a 200-fold d egenerate level at a distance similar to 110 K. (C) 1997 Institute of physics.