The magnetic structure of dhcp Nd was determined by combining the results of neutron diffraction studies with the results of Landau symmetry arguments and renormalization group theory The incipient magnetic order is a two-dimensional, incommensurably modulated structure ("triple-q" structure). The ordering is accompanied by a lattice distortion that forms a similar pattern. The modulation vector decreases from slightly above 1/7 b^1 at TN to 1/8 b^1, at ∼10 K. The moments at the hexagonal sites lie in the basal plane while those at the cubic sites lie predominantly along the hexagonal axis. The size of the moments on the cubic sites is approximately 25% of that of the moments on the
hexagonal sites, with a ratio of three between the moment components along the hexagonal axis and those in the basal plane.
|Place of Publication||Roskilde, Denmark|
|Publisher||Risø National Laboratory|
|Number of pages||7|
|Publication status||Published - 1978|