Ni2Si4, Liebenbergite, is an example of a quasi-one-dimensional magnet made up of frustrated corner sharing triangles of Ni2+ (S = 1) ions that propagate parallel to the b axis. Ni2Si4 is isostructural with olivine, a common mineral of varying composition Fe2-xMgxSi 4, and is described in the orthorhombic space group Pnma. A synthetic polycrystalline sample of Ni2Si4 was studied using powder neutron diffraction with spectra taken above and below the antiferromagnetic ordering transition (TN = 34 K). Analysis of the magnetic structure was carried out using the 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.
|Original language||English (US)|
|Journal||Journal of Physics: Conference Series|
|State||Published - 2009|
|Event||4th International Conference on Highly Frustrated Magnetism 2008, HFM 2008 - Braunschweig, Germany|
Duration: Sep 7 2008 → Sep 12 2008
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)