title: Planar array of self-assembled GaxFe4-xN nanocrystals in GaN: magnetic anisotropy determined via ferromagnetic resonance.
abstract: The magnetic anisotropy of a planar array of GaxFe(4 - x)N nanocrystals (NCs) embedded in a GaN host is studied by ferromagnetic resonance. X-ray diffraction and transmission electron microscopy are employed to determine the phase and distribution of the nanocrystals. The magnetic anisotropy is found to be primarily uniaxial with the hard axis normal to the NCs plane and to have a comparably weak in-plane hexagonal symmetry. The origin of the magnetic anisotropy is discussed taking into consideration the morphology of the nanocrystals, the epitaxial relations, strain effects and magnetic coupling between the NCs.
authors.affiliation: Institut für Halbleiter-und-Festkörperphysik, Johannes Kepler University, Altenbergerstr. 69, A-4040 Linz, Austria.
authors.forename: A
authors.initials: A
authors.lastname: Grois
authors.forename: T
authors.initials: T
authors.lastname: Devillers
authors.forename: Tian
authors.initials: T
authors.lastname: Li
authors.forename: A
authors.initials: A
authors.lastname: Bonanni