Use of ferromagnetic resonance to determine the size distribution of magnetic particles

Ferromagnetic resonance (FMR) experiments were performed as a function of temperature (18–300 K) on magnesium ferrite nanoparticles precipitated in magnesium oxide, for two different annealing times. By measuring the relative intensities of the spectra due to superparamagnetic particles and the anis...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2002-08, Vol.321 (1), p.117-119
Main Authors: de Biasi, R.S., Folly, W.S.D.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Ferromagnetic resonance
Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances
spin-wave resonance
Magnetic anisotropy
Magnetic nanoparticles
Magnetic properties and materials
Magnetic properties of nanostructures
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Magnetically ordered materials: other intrinsic properties
Particle size distribution
Physics
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Summary:Ferromagnetic resonance (FMR) experiments were performed as a function of temperature (18–300 K) on magnesium ferrite nanoparticles precipitated in magnesium oxide, for two different annealing times. By measuring the relative intensities of the spectra due to superparamagnetic particles and the anisotropy field of the spectrum due to ferromagnetic particles, we determined the size distribution of magnesium ferrite particles. The same method can be applied to other systems of interest, such as magnetic fluids and magnetic powders.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(02)00834-7