title: Neutron diffraction study of triple-layered Sr4Ru3O10.
abstract: The magnetic properties of the triple-layered Sr(4)Ru(3)O(10) have been investigated by means of neutron scattering diffraction. At zero field we find that the magnetic moments are ferromagnetically coupled and oriented along the c-axis with no signatures of either long-range antiferromagnetic order or ferromagnetic components in the ab-plane. The field dependence of the reflection intensity points to a metamagnetic response involving only the planar magnetic moments. The structural refinement indicates a distinct rearrangement of the unit cell as a function of both temperature and in-plane applied field. We show that at the temperature T* ~/= 50 K, below which the metamagnetic behavior is observed, the c-axis lattice parameter exhibits a rapid increase while the in-plane amplitude saturates. A similar upturn of the in-plane lattice parameter after the quench of the c-axis amplitude occurs above a critical magnetic field.
authors.affiliation: CNR-SPIN, I-84084 Fisciano, Italy. granata@fisica.unisa.it
authors.forename: Veronica
authors.initials: V
authors.lastname: Granata
authors.forename: Lucia
authors.initials: L
authors.lastname: Capogna
authors.forename: Manfred
authors.initials: M
authors.lastname: Reehuis
authors.forename: Rosalba
authors.initials: R
authors.lastname: Fittipaldi
authors.forename: Bachir
authors.initials: B
authors.lastname: Ouladdiaf
authors.forename: Sandro
authors.initials: S
authors.lastname: Pace
authors.forename: Mario
authors.initials: M
authors.lastname: Cuoco
authors.forename: Antonio
authors.initials: A
authors.lastname: Vecchione