| Issue |
Europhys. Lett.
Volume 53, Number 2, January 2001
|
|
|---|---|---|
| Page(s) | 257 - 263 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00146-1 | |
| Published online | 01 December 2003 | |
-ray magnetic-scattering study of magnetism in hydrogenated thin holmium
films
1
Ruhr-Universität Bochum, Institut für Experimental-/Festkörperphysik 44780
Bochum, Germany
2
European Synchroton Radiation Facility (ESRF) - BP 220, F-38043 Grenoble, France
Received:
11
September
2000
Accepted:
3
November
2000
The magnetic structure of holmium exhibits an incommensurate spin spiral
below the Néel temperature of 131.5 K. We have studied the effect of hydrogen
on the magnetic properties of antiferromagnetic holmium. Combining thin-film
deposition techniques with resonant magnetic X-ray scattering at the Ho 
absorption edge, we were able to follow the magnetic properties of HoHx, with
a small X-ray beam along a lateral hydrogen gradient in the sample. The results
show that the period for the spin spiral increases with increasing hydrogen
concentration while the Néel temperature decreases. Both effects can be
related to a weakening of the RKKY interaction caused by a depletion of the
mediating conduction electrons, which fill a low-lying hydrogen band.
PACS: 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron source X-ray scattering, etc.) / 75.70.Cn – Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) / 78.70.-g – Interactions of particles and radiation with matter
© EDP Sciences, 2001
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