Nuclear magnetic resonance of 57Fe in Al-, Ga- and Ti-substituted magnetite above Verwey temperature

Magnetite single crystals with Al, Ga and Ti substitutions were measured by means of 57Fe nuclear magnetic resonance (NMR) technique. Satellite structure of NMR spectra well above the Verwey temperature was detected and analyzed to obtain information on the distribution of substituting cations on ir...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2007-03, Vol.310 (2), p.2555-2557
Main Authors: Chlan, V., Gamaliy, E., Štěpánková, H., Kouřil, K., Englich, J., Kohout, J., Brabers, V.
Format: Article
Language:English
Subjects:
Cation substitution
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Hyperfine interaction
Magnetic oxide
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Magnetite
NMR
Nuclear magnetic resonance and relaxation
Physics
Spin echo
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Summary:Magnetite single crystals with Al, Ga and Ti substitutions were measured by means of 57Fe nuclear magnetic resonance (NMR) technique. Satellite structure of NMR spectra well above the Verwey temperature was detected and analyzed to obtain information on the distribution of substituting cations on iron sublattices. It was confirmed that Al and Ti enter iron octahedral B-sites. Ga strongly prefers tetrahedral A-sites, nevertheless a low presence of Ga cations in B-sites was detected.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2006.10.867