title: Magnetic structure of the metallic triangular antiferromagnet Ag2NiO2.
abstract: The magnetic structure of the metallic antiferromagnet Ag2NiO2 with the Néel temperature TN = 56 K has been investigated by means of a neutron diffraction technique using a powder sample in the temperature range between 5 and 65 K. The antiferromagnetic (AF) diffraction peaks are clearly observed below TN and can be indexed with the propagation vector [Formula: see text]. Based on the results of both a representational analysis and a Rietveld refinement of the magnetic peaks, the AF spin structure is determined as an A-type AF structure with ml = m0cos(2πk ⋅l), where ml is the moment at the lth Ni(3+) site and m0 = (0.31,0,0.65) μB at 5 K.
authors.affiliation: Toyota Central R & D Laboratories, Inc., 41-1 Yokomichi, Nagakute Aichi 480-1192, Japan. h-nozaki@mosk.tytlabs.co.jp
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nozaki
authors.forename: Martin
authors.initials: M
authors.lastname: Månsson
authors.forename: Bertrand
authors.initials: B
authors.lastname: Roessli
authors.forename: Vladimir
authors.initials: V
authors.lastname: Pomjakushin
authors.forename: Kazuya
authors.initials: K
authors.lastname: Kamazawa
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Ikedo
authors.forename: Henry E
authors.initials: HE
authors.lastname: Fischer
authors.forename: Thomas C
authors.initials: TC
authors.lastname: Hansen
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yoshida
authors.forename: Zenji
authors.initials: Z
authors.lastname: Hiroi
authors.forename: Jun
authors.initials: J
authors.lastname: Sugiyama