https://doi.org/10.1140/epjb/e2004-00373-8
Temperature and field dependence of the magnetic properties of Nd2-xCexCuO4
1
Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
2
Max-Planck-Institut für Physik Komplexer Systeme,
Nöthnizerstrasse 38, 01187 Dresden, Germany
3
Hahn-Meitner-Institut, Glienickerstrasse 100, 14109 Berlin, Germany
4
Institut für Festkörperforschung, Forschungszentrum Jülich,
52425 Jülich, Germany
Corresponding author: a chatt@ill.fr
Received:
9
April
2004
Published online:
14
December
2004
We have investigated the magnetic ordering of NdCexCuO4
for x = 0, 0.09, 0.13, 0.15 and 0.18 by neutron diffraction
at low temperatures down to 33 mK
and under magnetic field up to 5 tesla
applied along [ 1,-1,0] crystallographic direction. At zero applied
magnetic field Cu magnetic sublattice orders at
,
210, 130 and 105 K for x = 0, 0.09, 0.13, 0.15, respectively. No long
range magnetic order of the Cu could be detected for x = 0.18.
The magnetic order of Nd was found in all samples, with a gradual increase of
the polarized magnetic moment with decreasing temperature, saturating
around 1 K. Hyperfine induced nuclear polarization of the Nd nuclear spin has been observed below about 400 mK for samples with x = 0, 0.13, 0.15 and 0.18. Field variation of the
intensities of the principal and superstructure reflections of
Nd
CexCuO4 at millikelvin temperatures shows a field-induced second-order
double-k to single-k phase transition at
and 0.56 tesla for samples with x = 0 and 0.15, respectively at T = 50 mK. We have also investigated the polarization of the Nd electronic sublattice due to the field of the Cu sublattice
by the element specific X-ray resonant magnetic scattering investigation with synchrotron radiation.
PACS: 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004