Shape of the ferromagnetic resonance absorption band of textured powder samples of maghemite

The shape of the ferromagnetic resonance absorption band of powder microcrystalline ferrite γ-Fe 2 O 3 has been studied. Samples in the form of a ferromagnetic fluid have been subjected to preliminary particle orientation and frozen in a magnetic field. The shape of the absorption bands has been com...

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Bibliographic Details
Published in:Physics of the solid state 2011-12, Vol.53 (12), p.2450-2454
Main Authors: Shein, V. O., Van’kevich, A. V., Borisova, N. M., Anders, A. G.
Format: Article
Language:English
Subjects:
Anisotropy
Ferromagnetism
Iron oxides
Magnetic fields
Magnetism
Physics
Physics and Astronomy
Powders
Solid State Physics
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Summary:The shape of the ferromagnetic resonance absorption band of powder microcrystalline ferrite γ-Fe 2 O 3 has been studied. Samples in the form of a ferromagnetic fluid have been subjected to preliminary particle orientation and frozen in a magnetic field. The shape of the absorption bands has been computer processed with allowance for the anisotropy of the shape of particles and their spatial cubic anisotropy, as well as for the contribution from nondispersed fraction of the bulk of the powder. Satisfactory agreement with the experiment has been obtained for several orientations of the measuring magnetic field with respect to the preliminary orientation.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783411120225