DYNAMICS OF OXYGEN ORDERING IN YBA2CU3O6-ENERGY SYNCHROTRON X-RAY-DIFFRACTION(X STUDIED BY NEUTRON AND HIGH)

Authors
FRELLO T ANDERSEN NH MADSEN J KALI M VONZIMMERMANN M SCHMIDT O POULSEN HF SCHNEIDER JR WOLF T
Citation
T. Frello et al., DYNAMICS OF OXYGEN ORDERING IN YBA2CU3O6-ENERGY SYNCHROTRON X-RAY-DIFFRACTION(X STUDIED BY NEUTRON AND HIGH), Physica. C, Superconductivity, 282, 1997, pp. 1089-1090
Citations number
6
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
2
Pages
1089 - 1090
Database
ISI
SICI code
0921-4534(1997)282:<1089:DOOOIY>2.0.ZU;2-B
Abstract
The dynamics of the ortho-II oxygen structure in a high purity YBa2Cu3 O6+x, single crystal with x=0.50 has been studied by neutron and by X- ray diffraction with a photon energy of 100 keV. Our data show that th e oxygen order develops on two different time-scales, one of the order of seconds and a much slower of the order of weeks and months. The me chanism dominating the slow time-scale is related to oxygen diffusion, while the fast mechanism may result from a temperature-dependent chan ge in the average oxygen chain length.