Superparamagnetic relaxation in alpha-Fe particles

Franz Bødker; Steen Mørup; Michael Stanley Pedersen; P. Svedlindh; G.T. Jonsson; J.L. Garcia-Palacios; F.J. Lazaro

doi:10.1016/S0304-8853(97)00782-8

Superparamagnetic relaxation in alpha-Fe particles

Franz Bødker
, Steen Mørup
, Michael Stanley Pedersen
, P. Svedlindh
, G.T. Jonsson
, J.L. Garcia-Palacios
, F.J. Lazaro

Department of Physics

Uppsala University
University of Zaragoza

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

Abstract

The superparamagnetic relaxation time of carbon-supported alpha-Fe particles with an average size of 3.0 Mm has been studied over a large temperature range by the use of Mossbauer spectroscopy combined with AC and DC magnetization measurements. It is found that the relaxation time varies with temperature in accordance with Ni el's expression, tau = tau(0) exp (KV/kT) with tau(0) = (1.0 +/- 0.5) x 10(-10) s and K = (1.2 +/- 0.2) x 10(5) J m(-3). (C) 1998 Elsevier Science B.V. All rights reserved.

Original language	English
Journal	Journal of Magnetism and Magnetic Materials
Volume	177
Pages (from-to)	925-927
ISSN	0304-8853
DOIs	https://doi.org/10.1016/S0304-8853(97)00782-8
Publication status	Published - 1998

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@article{6fb741fc24f1444085abda5e503b29a9,

title = "Superparamagnetic relaxation in alpha-Fe particles",

abstract = "The superparamagnetic relaxation time of carbon-supported alpha-Fe particles with an average size of 3.0 Mm has been studied over a large temperature range by the use of Mossbauer spectroscopy combined with AC and DC magnetization measurements. It is found that the relaxation time varies with temperature in accordance with Ni el's expression, tau = tau(0) exp (KV/kT) with tau(0) = (1.0 +/- 0.5) x 10(-10) s and K = (1.2 +/- 0.2) x 10(5) J m(-3). (C) 1998 Elsevier Science B.V. All rights reserved.",

author = "Franz B{\o}dker and Steen M{\o}rup and Pedersen, \{Michael Stanley\} and P. Svedlindh and G.T. Jonsson and J.L. Garcia-Palacios and F.J. Lazaro",

year = "1998",

doi = "10.1016/S0304-8853(97)00782-8",

language = "English",

volume = "177",

pages = "925--927",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

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TY - JOUR

T1 - Superparamagnetic relaxation in alpha-Fe particles

AU - Bødker, Franz

AU - Mørup, Steen

AU - Pedersen, Michael Stanley

AU - Svedlindh, P.

AU - Jonsson, G.T.

AU - Garcia-Palacios, J.L.

AU - Lazaro, F.J.

PY - 1998

Y1 - 1998

N2 - The superparamagnetic relaxation time of carbon-supported alpha-Fe particles with an average size of 3.0 Mm has been studied over a large temperature range by the use of Mossbauer spectroscopy combined with AC and DC magnetization measurements. It is found that the relaxation time varies with temperature in accordance with Ni el's expression, tau = tau(0) exp (KV/kT) with tau(0) = (1.0 +/- 0.5) x 10(-10) s and K = (1.2 +/- 0.2) x 10(5) J m(-3). (C) 1998 Elsevier Science B.V. All rights reserved.

AB - The superparamagnetic relaxation time of carbon-supported alpha-Fe particles with an average size of 3.0 Mm has been studied over a large temperature range by the use of Mossbauer spectroscopy combined with AC and DC magnetization measurements. It is found that the relaxation time varies with temperature in accordance with Ni el's expression, tau = tau(0) exp (KV/kT) with tau(0) = (1.0 +/- 0.5) x 10(-10) s and K = (1.2 +/- 0.2) x 10(5) J m(-3). (C) 1998 Elsevier Science B.V. All rights reserved.

U2 - 10.1016/S0304-8853(97)00782-8

DO - 10.1016/S0304-8853(97)00782-8

M3 - Journal article

SN - 0304-8853

VL - 177

SP - 925

EP - 927

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

Superparamagnetic relaxation in alpha-Fe particles

Abstract

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