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Magnetic interaction in ferrous antimonite, FeSb2O4, and some derivatives.

Authors
Type
Published Article
Journal
Journal of Physics Condensed Matter
1361-648X
Publisher
IOP Publishing
Publication Date
Volume
24
Issue
27
Pages
276001–276001
Identifiers
DOI: 10.1088/0953-8984/24/27/276001
PMID: 22713475
Source
Medline
License
Unknown

Abstract

Ferrous antimonite, FeSb(2)O(4), which is isostructural with Pb(3)O(4), and some lead- and cobalt-doped variants of composition FeSb(1.5)Pb(0.5)O(4) and Co(0.5)Fe(0.5)Sb(1.5)Pb(0.5)O(4) have been examined by (57)Fe and (121)Sb Mössbauer spectroscopy. Antimony is present as Sb(3+). The presence of Pb(2+) on the antimony site induces partial oxidation of Fe(2+) to Fe(3+). There is no Verwey-type transition in which electrons are shared between iron in different oxidation states. The quasi-one-dimensional magnetic structure gives rise to situations in which weakly coupled Fe(2+) ions can coexist in a non-magnetic state alongside Fe(3+) ions in a magnetically ordered state.

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