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MA: Fachverband Magnetismus
MA 59: Posters Magnetism III
MA 59.44: Poster
Freitag, 20. März 2020, 09:00–12:00, P2/EG
Exotic magnetism in novel RE3Fe3Sb7 compounds — •S. Palazzese1, S. Chattopadhyay1, M. Uhlarz1, S. Yamamoto1, F. Pabst3, T. Herrmannsdörfer1, J. Wosnitza1,2, and M. Ruck3 — 1Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf — 2Institut für Festkörper-und Materialphysik, TU Dresden — 3Fakultät für Chemie und Lebensmittelchemie, TU Dresden
Here we present a DC magnetization study of novel RE3Fe3Sb7 (RE = Pr, Nd, Sm) compounds with hexagonal crystalline structure P63/m. Measurements are performed at temperatures from 2 to 400 K and fields up to 7 T by means of SQUID magnetometry on single crystals. We observe a plethora of magnetic phase transitions at temperatures below 390 K. We show that the B-T phase diagram varies with the chemical RE composition of the compound and anisotropic magnetic behavior is observed for different orientations. Below 20 K, we observe a wide magnetic hysteresis loop, while at higher temperatures soft-magnetic behavior is found. Our results suggest strong evidence for the occurence of ferrimagnetic compensation points for each compound.