Critical dynamics of an interacting magnetic nanoparticle system

Mikkel Fougt Hansen; P.E. Jonsson; P. Nordblad; P. Svedlindh

Critical dynamics of an interacting magnetic nanoparticle system

Mikkel Fougt Hansen, P.E. Jonsson, P. Nordblad, P. Svedlindh

Department of Physics

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Effects of dipole-dipole interactions on the magnetic relaxation have been investigated for three Fe-C nanoparticle samples with volume concentrations of 0.06, 5 and 17 vol%. While both the 5 and 17 vol% samples exhibit collective behaviour due to dipolar interactions, only the 17 vol% sample displays critical behaviour close to its transition temperature. The behaviour of the 5 vol% sample can be attributed to a mixture of collective and single-particle dynamics.

Original language	English
Journal	Journal of Physics Condensed Matter
Volume	14
Issue number	19
Pages (from-to)	4901-4914
ISSN	0953-8984
Publication status	Published - 2002

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title = "Critical dynamics of an interacting magnetic nanoparticle system",

abstract = "Effects of dipole-dipole interactions on the magnetic relaxation have been investigated for three Fe-C nanoparticle samples with volume concentrations of 0.06, 5 and 17 vol%. While both the 5 and 17 vol% samples exhibit collective behaviour due to dipolar interactions, only the 17 vol% sample displays critical behaviour close to its transition temperature. The behaviour of the 5 vol% sample can be attributed to a mixture of collective and single-particle dynamics.",

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T1 - Critical dynamics of an interacting magnetic nanoparticle system

AU - Hansen, Mikkel Fougt

AU - Jonsson, P.E.

AU - Nordblad, P.

AU - Svedlindh, P.

PY - 2002

Y1 - 2002

N2 - Effects of dipole-dipole interactions on the magnetic relaxation have been investigated for three Fe-C nanoparticle samples with volume concentrations of 0.06, 5 and 17 vol%. While both the 5 and 17 vol% samples exhibit collective behaviour due to dipolar interactions, only the 17 vol% sample displays critical behaviour close to its transition temperature. The behaviour of the 5 vol% sample can be attributed to a mixture of collective and single-particle dynamics.

AB - Effects of dipole-dipole interactions on the magnetic relaxation have been investigated for three Fe-C nanoparticle samples with volume concentrations of 0.06, 5 and 17 vol%. While both the 5 and 17 vol% samples exhibit collective behaviour due to dipolar interactions, only the 17 vol% sample displays critical behaviour close to its transition temperature. The behaviour of the 5 vol% sample can be attributed to a mixture of collective and single-particle dynamics.

M3 - Journal article

SN - 0953-8984

VL - 14

SP - 4901

EP - 4914

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 19

ER -

Critical dynamics of an interacting magnetic nanoparticle system

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