Study of the zero-field magnetic ordering, charge fluctuation and trapping in the oxo-bridged heterometallic acetylacetonate complex Fe3YO6R3[Y11(C5O2H7)33]; (R= C5H7)

The Mössbauer, magnetic susceptibility and EXAFS data for the oxo-bridged heterometallic acetylacetonate Fe3YO6R3[Y11(C5O2H7)33] (R = C5H7) are analyzed in terms of a bound-to-free model describing the transition from the state of “delocalized valence”, denoted Fedeloc(3−δ)+, in the magnetically dis...

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Bibliographic Details
Published in:Journal of materials science 2003-05, Vol.38 (10), p.2219-2222
Main Authors: MAKSIMOV, Yu. V, SUZDALEV, I. P, TSODIKOV, M. V, ALVAREZ, M. A, COLON, G, NAVIO, J. A
Format: Article
Language:English
Subjects:
Magnetic permeability
Materials science
Variation
Online Access:Get full text
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Summary:The Mössbauer, magnetic susceptibility and EXAFS data for the oxo-bridged heterometallic acetylacetonate Fe3YO6R3[Y11(C5O2H7)33] (R = C5H7) are analyzed in terms of a bound-to-free model describing the transition from the state of “delocalized valence”, denoted Fedeloc(3−δ)+, in the magnetically disordered “paramagnetic” complex at 300 K to the states of “localized valence”, denoted Feloc2+ and Feloc3+, in the magnetically ordered complex at 4.2 and 77 K.
ISSN:0022-2461
1573-4803
DOI:10.1023/A:1023744618178