Low temperature magnetic structure of the quasi 1-dimensional magnet Ni2SiO4.
HIGHLY FRUSTRATED MAGNETISM 2008 (HFM 2008)
, Article 012037. 10.1088/1742-6596/145/1/012037.
Ni2SiO4, Liebenbergite, is an example of a quasi-one-dimensional magnet made up of frustrated corner sharing traingles of Ni2+ (S = 1) ions that propagated parallel to the b axis, Ni2SiO4 is isostructural with olivine, a common mineral of varying composition Fe2-xMgxSiO4, and is described in the orthorhombic space group Pnma. A synthetic polycrystalline sample of Ni2SiO4 was studied using powder neutron diffraction with spectra taken above and below that antiferromagnetic ordering transition (T-N approximate to 34 K). Analysis of the magnetic structure was carried out using symmetry models of corepresentation theory. The refined spin structure evidences both ferromagnetic and antiferromagnetic inter-chain interactions, and ferromagnetic intra-chain coupling. The competition between the magnetic interactions can be seen in the canting of the moments away from a collinear arrangement.
|Title:||Low temperature magnetic structure of the quasi 1-dimensional magnet Ni2SiO4|
|Location:||Technische Univ, Braunschweig, GERMANY|
|Open access status:||An open access publication|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
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