| Issue |
Europhys. Lett.
Volume 68, Number 2, October 2004
|
|
|---|---|---|
| Page(s) | 282 - 288 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10195-4 | |
| Published online | 01 October 2004 | |
Polarized neutron reflectivity on dilute magnetic alloys
1
Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven Celestijnenlaan 200 D, B-3001 Leuven, Belgium
2
Hahn-Meitner-Institut - Glienicker Strasse 100, D-14109 Berlin, Germany
3
Theoretische Fysica van de Vaste Stoffen, Departement Natuurkunde Universiteit Antwerpen - Universiteitsplein 1, B-2610 Antwerpen, Belgium
Corresponding author: Johan.Swerts@fys.kuleuven.ac.be
Received:
4
March
2004
Accepted:
25
August
2004
In order to probe the impurity spin magnetization of a thin
doped (7 at.%) 
film, which is near the
magnetic percolation limit, we measured the polarized neutron
reflectivity of the film. The observed magnetic-field dependence
of the magnetization indicates that atoms are partially
dispersed homogeneously into the matrix and partially
aggregated as clusters with typical size around 1
. Our
results imply that polarized neutron reflectivity can be used as
a sensitive tool to probe the magnetic properties of dilute
magnetic alloy films even in the absence of clustering.
PACS: 75.20.Hr – Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions / 75.30.Cr – Saturation moments and magnetic susceptibilities / 75.30.Gw – Magnetic anisotropy
© EDP Sciences, 2004
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