title: Magnetic structure of RuSr2GdCu2O8 determined by resonant x-ray diffraction.
abstract: 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.
authors.affiliation: Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Bohnenbuck
authors.forename: I
authors.initials: I
authors.lastname: Zegkinoglou
authors.forename: J
authors.initials: J
authors.lastname: Strempfer
authors.forename: C S
authors.initials: CS
authors.lastname: Nelson
authors.forename: H-H
authors.initials: HH
authors.lastname: Wu
authors.forename: C
authors.initials: C
authors.lastname: Schübler-Langeheine
authors.forename: M
authors.initials: M
authors.lastname: Reehuis
authors.forename: E
authors.initials: E
authors.lastname: Schierle
authors.forename: Ph
authors.initials: P
authors.lastname: Leininger
authors.forename: T
authors.initials: T
authors.lastname: Herrmannsdörfer
authors.forename: J C
authors.initials: JC
authors.lastname: Lang
authors.forename: G
authors.initials: G
authors.lastname: Srajer
authors.forename: C T
authors.initials: CT
authors.lastname: Lin
authors.forename: B
authors.initials: B
authors.lastname: Keimer