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Journal article

Superparamagnetic relaxation of weakly interacting particles

By Mørup, Steen1,2; Tronc, Elisabeth3

From

Quantum Physics and Information Technology, Department of Physics, Technical University of Denmark1

Department of Physics, Technical University of Denmark2

Sorbonne Université3

The influence of particle interactions on the superparamagnetic relaxation time has been studied by Mossbauer spectroscopy in samples of maghemite (gamma-Fe2O3) particles with different particle sizes and particle separations. It is found that the relaxation time decreases with decreasing particle interactions.

A new model for the influence of interactions on the superparamagnetic relaxation has been derived and it is shown that this model can explain the observations.

Language: English
Year: 1994
Pages: 3278-3281
ISSN: 00319007 and 10797114
Types: Journal article
DOI: 10.1103/PhysRevLett.72.3278
Keywords

DEPENDENCE GLASS MOSSBAUER-SPECTRA PEAK SUSCEPTIBILITY PHENOMENA SYSTEM TEMPERATURE

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