Dynamics of Magnetic Nanoparticles Studied by Neutron Scattering

Mikkel Fougt Hansen, Franz Bødker, Steen Mørup, Kim Lefmann, Kurt Nørgaard Clausen, Per-Anker Lindgård

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Abstract

We present the first triple-axis neutron scattering measurements of magnetic fluctuations in nanoparticles using an antiferromagnetic reflection. Both the superparamagnetic relaxation and precession modes in similar to 15 nm hematite particles are: observed. The results have been consistently analyzed on the basis of a simple model with uniaxial anisotropy and the Neel-Brown theory for the relaxation.
Original languageEnglish
JournalPhysical Review Letters
Volume79
Issue number24
Pages (from-to)4910-4913
ISSN0031-9007
DOIs
Publication statusPublished - 1997

Bibliographical note

Copyright (1997) by the American Physical Society.

Keywords

  • MOSSBAUER

Cite this

Hansen, M. F., Bødker, F., Mørup, S., Lefmann, K., Clausen, K. N., & Lindgård, P-A. (1997). Dynamics of Magnetic Nanoparticles Studied by Neutron Scattering. Physical Review Letters, 79(24), 4910-4913. https://doi.org/10.1103/PhysRevLett.79.4910