DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2013 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

MA: Fachverband Magnetismus

MA 25: Magnetic Heusler Compounds

MA 25.10: Talk

Wednesday, March 13, 2013, 11:45–12:00, H10

Giant non-collinear magnetism and a spin reorientation in Mn2RhSn Heusler compound. — •Olga Meshcheriakova1,2, Ajaya K. Nayak3, Stanislav Chadov3, Jürgen Kübler4, Teuta Gasi1, Vadim Ksenofontov1, Walter Schnelle3, Alexander Tsirlin3, and Claudia Felser1,2,31Institut für Anorganische und Analytische Chemie, Johannes Gutenberg Universität Mainz, 55099 Mainz, Germany — 2Graduate School of Excellence Materials Science in Mainz, 55128 Mainz, Germany — 3Max-Planck-Institut für Chemische Physik fester Stoffe, 01187 Dresden, Germany — 4Institut für Festkörperphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany

Magnetic, structural, heat and transport properties of the bulk polycrystalline Mn2RhSn tetragonal Heusler compound have been investigated. A field-driven magnetic transition was observed within a temperature range between 50 and 100 K. Such behavior was attributed to the non-collinear magnetism which results as competition between the anisotropy induced by tetragonal strain and typical antiparallel alignment of two Mn magnetic sublattices. According to the additional first-principles calculations, the present material exhibits a huge angle between these two magnetic sublattices. The experimentally measured saturated magnetization (of 2 µB per formula unit) was reasonably explained by combining the non-collinear magnetic calculations with the effects of an antisite disorder indicated by Moessbauer measurements.

This work is supported by the Graduate School of Excellence Materials Science in Mainz (MAINZ).

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2013 > Regensburg