VIBRATIONS OF CARBON-SUPPORTED ULTRAFINE IRON-OXIDE PARTICLES

Authors
HENDRIKSEN PV BODKER F MORUP S
Citation
Pv. Hendriksen et al., VIBRATIONS OF CARBON-SUPPORTED ULTRAFINE IRON-OXIDE PARTICLES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 76(1-4), 1993, pp. 221-222
Citations number
4
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
76
Issue
1-4
Year of publication
1993
Pages
221 - 222
Database
ISI
SICI code
0168-583X(1993)76:1-4<221:VOCUIP>2.0.ZU;2-T
Abstract
Carbon-supported 5 nm iron oxide particles have been studied by use of Mossbauer 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 vibrat ions give an important contribution to the mean square amplitude of th e atoms. After wetting the sample with water the logarithm of the area still varies linearly with temperature, but the slope is reduced cons iderably. This indicates that the formation of ice around the particle s reduces the particle vibrations.