THE OBSERVATION OF THE MAGNETIC CORRELATIONS IN YBA2(CU1-XFEX)(3)O7-ANGLE POLARIZED NEUTRON-SCATTERING(Y CERAMICS BY SMALL)

Authors
KOPITSA G RUNOV V OKOROKOV A
Citation
G. Kopitsa et al., THE OBSERVATION OF THE MAGNETIC CORRELATIONS IN YBA2(CU1-XFEX)(3)O7-ANGLE POLARIZED NEUTRON-SCATTERING(Y CERAMICS BY SMALL), Physica. B, Condensed matter, 234, 1997, pp. 839-840
Citations number
8
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
234
Year of publication
1997
Pages
839 - 840
Database
ISI
SICI code
0921-4526(1997)234:<839:TOOTMC>2.0.ZU;2-Y
Abstract
The small-angle polarized neutron scattering (SAPNS) technique has bee n used to observe the magnetic ordering in the system of YBa2Cu2.61Fe0 .39O7+y ceramics. The anomalies of the temperature dependences of the scattering intensity I(T, q), the polarization P(T, q) and the differe nce Delta(T, q) in SAPNS intensities of neutrons polarized along with or opposite to the applied magnetic field were found in the temperatur e region T < 40 K. These effects are interpreted as scattering of neut rons from magnetic fluctuations with characteristic scale lying in the range from 70 to 370 Angstrom.