STRUCTURE AND MOSSBAUER-EFFECT STUDIES OF Y2SN2-XFEXO7-DELTA PYROCHLORES

Authors
YANG CL SUN JJ XUE DS LI FS SHI QM MA ZQ
Citation
Cl. Yang et al., STRUCTURE AND MOSSBAUER-EFFECT STUDIES OF Y2SN2-XFEXO7-DELTA PYROCHLORES, Hyperfine interactions, 92(1-4), 1994, pp. 1001-1006
Citations number
6
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
92
Issue
1-4
Year of publication
1994
Pages
1001 - 1006
Database
ISI
SICI code
0304-3843(1994)92:1-4<1001:SAMSOY>2.0.ZU;2-K
Abstract
Y2Sn2-xFexO7-delta pyrochlores were studied by means of X-ray diffract ion, Sn-119 and Fe-57 Mossbauer spectroscopy. The single phase Y2Sn2-x FexO7-delta pyrochlores up to x = 0.8 were produced by the chemical co precipitation method. The quadrupole splittings of Sn-119 decrease lin early with increasing iron content. The Fe-57 Mossbauer spectra for x = 0.6 and 0.8 both are composed of a sextet and two doublets, indicati ng that some Fe3+ ion environments in the pyrochlores are magnetically ordered. The magnetic hyperfine splitting disappears in the sample wi th x = 1.0, which contains a second phase.