https://doi.org/10.1007/s100510051097
Neutron scattering study of transverse magnetism in the metamagnet FeBr2
1
Laboratorium für Angewandte Physik, Gerhard-Mercator-Universität,
47048 Duisburg, Germany
2
Laboratoire de Physique des Solides, INSA, 31077 Toulouse Cedex, France
3
Institut Laue Langevin (ILL), 38042 Grenoble Cedex 9, France
4
The Institute of Physical and Chemical Research (RIKEN), Wako,
Saitama 351-01, Japan
5
Hahn-Meitner-Institut (HMI), 14109 Berlin, Germany
Received:
27
September
1999
Revised:
6
December
1999
Published online: 15 May 2000
In order to clarify the nature of the additional phase transition at
of the layered antiferromagnetic (AF)
insulator 
as found by Aruga Katori et al.
(1996) we measured the intensity of different Bragg-peaks in
different scattering geometries. Transverse AF ordering is observed
in both AF phases, AF I and AF II. Its order parameter exhibits a
peak at 
in temperature scans and does not vanish
in zero field. Possible origins of the step-like increase of the
transverse ferromagnetic ordering induced by a weak in-plane field
component when entering AF I below T1 are discussed.
PACS: 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.) / 75.30.Kz – Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.) / 75.50.Ee – Antiferromagnetics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
