Magnetic structure of RuSr2GdCu2O8 determined by resonant x-ray diffraction.
X-ray diffraction with photon energies near the Ru L2-absorption edge was used to detect resonant reflections characteristic of a G-type superstructure in RuSr2GdCu2O8 single crystals. A polarization analysis confirms that these reflections are due to magnetic order of Ru moments, and the azimuthal-angle dependence of the scattering amplitude reveals that the moments lie along a low-symmetry axis with substantial components parallel and perpendicular to the RuO2 layers. Complemented by susceptibility data and a symmetry analysis of the magnetic structure, these results reconcile many of the apparently contradictory findings reported in the literature.
Bohnenbuck
B
B
Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany.
Zegkinoglou
I
I
Strempfer
J
J
Nelson
C S
CS
Wu
H-H
HH
Schübler-Langeheine
C
C
Reehuis
M
M
Schierle
E
E
Leininger
Ph
P
Herrmannsdörfer
T
T
Lang
J C
JC
Srajer
G
G
Lin
C T
CT
Keimer
B
B