MIXED HYPERFINE INTERACTIONS IN FE-MG-O - MAGNETIC-BEHAVIOR

Authors
JING J CAMPBELL SJ ENGELMANN H
Citation
J. Jing et al., MIXED HYPERFINE INTERACTIONS IN FE-MG-O - MAGNETIC-BEHAVIOR, Hyperfine interactions, 78(1-4), 1993, pp. 469-474
Citations number
9
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
78
Issue
1-4
Year of publication
1993
Pages
469 - 474
Database
ISI
SICI code
0304-3843(1993)78:1-4<469:MHIIF->2.0.ZU;2-6
Abstract
The complex Mossbauer spectra exhibited by Fe(x)O (x almost-equal-to 0 .91) and (Fe1-yMgy)xO (y = 0.15-0.85) powder samples at liquid helium temperature have been analysed by a Hamiltonian treatment to allow for the significant electric field gradients present at the Fe2+ defect s ites. The magnetic behaviour of the defect clusters are considered in terms of antiferromagnetic couplings, consistent with the spin glass-l ike behaviour reported recently for magnesio-wustite.