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TT: Fachverband Tiefe Temperaturen
TT 11: Magnetic Heuslers, Half-Metals and Oxides (jointly with MA)
TT 11.9: Vortrag
Montag, 16. März 2015, 11:45–12:00, H 0112
Magnetism in tetragonal Heusler compounds — •Lukas Wollmann1, Stanislav Chadov1, Jürgen Kübler2, and Claudia Felser1 — 1Max Planck Institute for Chemical Physics of Solids, Dresden, Germany. — 2Institut für Festkörperphysik, Technische Universität Darmstadt, Darmstadt, Germany
Compounds with uniaxial anisotropy are of general interest in the field of magnetism, and in particular within the emerging field of spintronics. Uniaxial anisotropy is an inherent property of many tetragonal Heusler compounds. Here we report on a comprehensive study on tetragonal Manganese-based Heusler compounds, by starting from a set of cubic parent systems and continuing with the mechanisms of their tetragonal distortion, in particular focusing on the magnetic properties, and explaining the microscopic origin of the observed properties, as for example, for the magnetocrystalline anisotropy. Rather high anisotropy values were obtained for those systems containing heavy transition metals, which suggests them as candidate materials for spin transfer torque magnetization switching applications.