Interactions between goethite particles subjected to heat treatment

Daniel Esmarch Madsen; Mikkel Fougt Hansen; C.B. Koch; Steen Mørup

doi:10.1088/0953-8984/20/13/135215

Interactions between goethite particles subjected to heat treatment

Daniel Esmarch Madsen
, Mikkel Fougt Hansen
, C.B. Koch
, Steen Mørup

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

Abstract

We have studied the effect of heating on the magnetic properties of particles of nanocrystalline goethite by use of Mossbauer spectroscopy. Heating at 150 degrees C for 24 h leads to a change in the quadrupole shift in the low-temperature spectra, indicating a rotation of the sublattice magnetization directions. Fitting of quantiles, derived from the asymmetrically broadened spectra between 80 and 300 K, to the superferromagnetism model indicates that this change is due to a stronger magnetic coupling between the particles.

Original language	English
Journal	Journal of Physics Condensed Matter
Volume	20
Issue number	13
Pages (from-to)	135215
ISSN	0953-8984
DOIs	https://doi.org/10.1088/0953-8984/20/13/135215
Publication status	Published - 2008

Access to Document

10.1088/0953-8984/20/13/135215

OpenUrl availability

Full text

Cite this

@article{745f6ebf599a47c783f9a4e41ecdb0c0,

title = "Interactions between goethite particles subjected to heat treatment",

abstract = "We have studied the effect of heating on the magnetic properties of particles of nanocrystalline goethite by use of Mossbauer spectroscopy. Heating at 150 degrees C for 24 h leads to a change in the quadrupole shift in the low-temperature spectra, indicating a rotation of the sublattice magnetization directions. Fitting of quantiles, derived from the asymmetrically broadened spectra between 80 and 300 K, to the superferromagnetism model indicates that this change is due to a stronger magnetic coupling between the particles.",

author = "Madsen, \{Daniel Esmarch\} and Hansen, \{Mikkel Fougt\} and C.B. Koch and Steen M{\o}rup",

year = "2008",

doi = "10.1088/0953-8984/20/13/135215",

language = "English",

volume = "20",

pages = "135215",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

publisher = "IOP Publishing",

number = "13",

}

TY - JOUR

T1 - Interactions between goethite particles subjected to heat treatment

AU - Madsen, Daniel Esmarch

AU - Hansen, Mikkel Fougt

AU - Koch, C.B.

AU - Mørup, Steen

PY - 2008

Y1 - 2008

N2 - We have studied the effect of heating on the magnetic properties of particles of nanocrystalline goethite by use of Mossbauer spectroscopy. Heating at 150 degrees C for 24 h leads to a change in the quadrupole shift in the low-temperature spectra, indicating a rotation of the sublattice magnetization directions. Fitting of quantiles, derived from the asymmetrically broadened spectra between 80 and 300 K, to the superferromagnetism model indicates that this change is due to a stronger magnetic coupling between the particles.

AB - We have studied the effect of heating on the magnetic properties of particles of nanocrystalline goethite by use of Mossbauer spectroscopy. Heating at 150 degrees C for 24 h leads to a change in the quadrupole shift in the low-temperature spectra, indicating a rotation of the sublattice magnetization directions. Fitting of quantiles, derived from the asymmetrically broadened spectra between 80 and 300 K, to the superferromagnetism model indicates that this change is due to a stronger magnetic coupling between the particles.

U2 - 10.1088/0953-8984/20/13/135215

DO - 10.1088/0953-8984/20/13/135215

M3 - Journal article

SN - 0953-8984

VL - 20

SP - 135215

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 13

ER -

Interactions between goethite particles subjected to heat treatment

Abstract

Access to Document

OpenUrl availability

Fingerprint

Cite this