Vibrations of carbon-supported ultrafine iron oxide particles

P.V. Hendriksen; F. Bødker; S. Mørup

doi:10.1016/0168-583X(93)95187-A

Vibrations of carbon-supported ultrafine iron oxide particles

P.V. Hendriksen
, F. Bødker
, S. Mørup

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

Abstract

Carbon-supported 5 nm iron oxide particles have been studied by use of Mössbauer spectroscopy. It is found that the spectral area decreases rapidly with increasing temperature and the temperature dependence of its logarithm is linear above 5 K. This indicates that particle vibrations give an important contribution to the mean square amplitude of the atoms. After wetting the sample with water the logarithm of the area still varies linearly with temperature, but the slope is reduced considerably. This indicates that the formation of ice around the particles reduces the particle vibrations.

Original language	English
Journal	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume	76
Issue number	1-4
Pages (from-to)	221-222
ISSN	0168-583X
DOIs	https://doi.org/10.1016/0168-583X(93)95187-A
Publication status	Published - 1993

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abstract = "Carbon-supported 5 nm iron oxide particles have been studied by use of M{\"o}ssbauer spectroscopy. It is found that the spectral area decreases rapidly with increasing temperature and the temperature dependence of its logarithm is linear above 5 K. This indicates that particle vibrations give an important contribution to the mean square amplitude of the atoms. After wetting the sample with water the logarithm of the area still varies linearly with temperature, but the slope is reduced considerably. This indicates that the formation of ice around the particles reduces the particle vibrations.",

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T1 - Vibrations of carbon-supported ultrafine iron oxide particles

AU - Hendriksen, P.V.

AU - Bødker, F.

AU - Mørup, S.

PY - 1993

Y1 - 1993

N2 - Carbon-supported 5 nm iron oxide particles have been studied by use of Mössbauer spectroscopy. It is found that the spectral area decreases rapidly with increasing temperature and the temperature dependence of its logarithm is linear above 5 K. This indicates that particle vibrations give an important contribution to the mean square amplitude of the atoms. After wetting the sample with water the logarithm of the area still varies linearly with temperature, but the slope is reduced considerably. This indicates that the formation of ice around the particles reduces the particle vibrations.

AB - Carbon-supported 5 nm iron oxide particles have been studied by use of Mössbauer spectroscopy. It is found that the spectral area decreases rapidly with increasing temperature and the temperature dependence of its logarithm is linear above 5 K. This indicates that particle vibrations give an important contribution to the mean square amplitude of the atoms. After wetting the sample with water the logarithm of the area still varies linearly with temperature, but the slope is reduced considerably. This indicates that the formation of ice around the particles reduces the particle vibrations.

KW - Materialer til strukturelle formål

U2 - 10.1016/0168-583X(93)95187-A

DO - 10.1016/0168-583X(93)95187-A

M3 - Journal article

SN - 0168-583X

VL - 76

SP - 221

EP - 222

JO - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

IS - 1-4

ER -

Vibrations of carbon-supported ultrafine iron oxide particles

Abstract

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