Regensburg 2013 – scientific programme
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MA: Fachverband Magnetismus
MA 25: Magnetic Heusler Compounds
MA 25.9: Talk
Wednesday, March 13, 2013, 11:30–11:45, H10
Cubic phase in Fe2-based Heusler materials stabilized by disorder. — •Janos Kiss1, Stanislav Chadov1, Gerhard H. Fecher1, Teuta Gasi2, Vadim Ksenofontov2, Peter Adler1, and Claudia Felser1 — 1Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden — 2Johannes-Gutenberg Universität, Mainz
Due to their relatively large magnetic moments and strong magnetic anisotropy, the Fe2-based Heusler compounds with tetragonal distortion are expected to be attractive candidates in hard-magnetic applications. In contrast to the first theoretical predictions, however, many of them crystallize in the cubic structure. In the framework of ab-initio electron structure calculations, we explain the stability of their cubic phase as based on combined effect of intrinsic chemical disorder and crystal symmetry.