Dresden 2014 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 4: Magnetic Heuslers, Half-metals and Oxides I (with TT)

MA 4.5: Vortrag

Montag, 31. März 2014, 10:30–10:45, BEY 118

Design of compensated ferrimagnets based on Mn-rich Heusler compounds — •Stanislav Chadov, Olga Meshcheriakova, Ajaya Nayak, and Claudia Felser — Max-Planck-Institut für Chemische Physik fester Stoffe Nöthnitzer Straße 40 01187 Dresden

Recent developments in the field of MRAM technologies such as ultrafast optical spin-switching has stimulated the search for materials which provide efficient mechanisms of exchange relaxation. The best candidate materials can be provided within the class of the compensated ferrimagnets. Here we propose the design scheme of compensated ferrimagnets based on tetragonal Mn-rich Heusler alloys. Together with the properties typical for antiferromagnets (e.g. exchange bias) we analyze the phenomena (e.g. anomalous Hall effect or MOKE) which are absent in the systems with zero net magnetization.