Regensburg 2013 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 16: Poster I
MA 16.11: Poster
Dienstag, 12. März 2013, 10:30–13:30, Poster D
Anisotropy study of the magnetoelectric properties of LiFeSi2O6 — •Matthias Ackermann1, Petra Becker1, Ladislav Bohatý1, and Thomas Lorenz2 — 1Institut für Kristallographie, Universität zu Köln — 2II. Physikalisches Institut, Universität zu Köln
LiFeSi2O6 belongs to the class of pyroxenes with the general formula AMT2O6 (A=mono- or divalent metal, M=di- or trivalent metal, T=tetra- or trivalent metal). The members of this class are well known for their multiferroic/linear magnetoelectric properties. [1] The structure of LiFeSi2O6 consists of one-dimensional zig-zag chains of edge-sharing [FeO6] octahedra running along the crystallographic c-axis. Within the (110) and (110) planes these chains are connected by chains of [SiO4] tetrahedra. At 230 K the compound undergoes a structural phase transition with a change in space group symmetry from C2/c to P21/c. [3] Below the magnetic ordering temperature TC∼ 18 K LiFeSi2O6 belongs to the magnetic space group P21/c′ [2] and shows the linear magnetoelectric effect. In this contribution we present a detailed investigation of the linear magnetoelectric properties and their anisotropy of this compound.
0mm This work was supported by the DFG through SFB 608.
[1] S. Jodlauk et al. J. Phys.: Condens. Matter 19, 432201 (2007)
[2] G. J. Redhammer et al. Phys Chem Min. 28, 337 (2001)
[3] M. Behruzi et al. Acta Crystallogr. A 40 (Suppl.), C-247 (1984)