| Issue |
Europhys. Lett.
Volume 60, Number 4, November 2002
|
|
|---|---|---|
| Page(s) | 608 - 614 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00262-4 | |
| Published online | 01 November 2002 | |
Experimental evidence of the ferrimagnetic ground state
of 
probed by X-ray magnetic circular dichroism
1
Unité mixte de Physique CNRS/THALES
Domaine de Corbeville, 91404 Orsay Cedex, France and Université Paris
Sud - 91405 Orsay Cedex, France
2
Laboratoire Louis Néel - B.P. 166, 38042 Grenoble
Cedex, France
3
European Synchrotron Radiation Facility (ESRF)
B.P. 220, 38043 Grenoble Cedex, France
4
Laboratoire de Physico-Chimie de l'Etat Solide
Bâtiment 410, 91405 Orsay Cedex, France
5
Daresbury Laboratory - Daresbury, Warrington WA4 4AD,
Cheshire, UK
Received:
15
July
2002
Accepted:
5
September
2002
We have investigated the magnetic structure of a
single crystal by X-ray magnetic circular
dichroism at the 
edges of 
and 
sites. The spin magnetic moments we find on
and
give, for
the first time, a direct confirmation of their ferrimagnetic
ordering. The presence of a finite spin moment on
together with only very small orbital moments on both
and confirms that the predicted half-metallicity of the
compound is due to a configuration with five
localized d electrons forming a high-spin moment on
and one s antiparallel delocalized electron shared between the
and the other sites.
PACS: 75.70.Cn – Interfacial magnetic properties (multilayers) / 68.37.-d – Microscopy of surfaces, interfaces, and thin films / 75.70.Rf – Surface magnetism
© EDP Sciences, 2002
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