SKM 2021 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 3: Posters Magnetism I

MA 3.21: Poster

Montag, 27. September 2021, 13:30–16:30, P

Unconventional magnetism in the RE₃Fe₃Sb₇ spin system — •Sabrina Palazzese^1,2, Falk Pabst³, Sumanta Chattopadhyay¹, Shingo Yamamoto¹, Thomas Herrmannsdörfer¹, Denis Gorbunov¹, Eugen Weschke⁴, Oleksandr Prokhnenko⁴, Hiroyuki Nojiri⁵, Thomas Doert³, Bella Lake^4,6, Joachim Wosnitza^1,2, and Michael Ruck³ — ¹Hochfeld-Magnetlabor Dresden (HLD-EMFL), HZDR, Dresden, Germany — ²Institut für Festkörper- und Materialphysik, TU Dresden, Germany — ³Fakultät für Chemie und Lebensmittelchemie, TU Dresden, Germany — ⁴Helmholtz-Zentrum Berlin für Materialien und Energie (HZB), Berlin, Germany — ⁵Institute for Materials Research, Tohoku University, Sendai, Japan — ⁶Institut für Festkörperphysik, TU Berlin, Germany

Here we present a detailed magnetization and electrical-transport study of novel RE₃Fe₃Sb₇ compounds. We find a number of spontaneous magnetic phase transitions in a wide temperature range and a pronounced magnetic anisotropy. RE₃Fe₃Sb₇ shows an emergent spontaneous magnetization in zero field and a kink in the temperature-dependent resistivity at the spin-reorientation transition SRT. In the ground state, RE₃Fe₃Sb₇ displays a large uniaxial magnetic anisotropy that changes to planar at SRT. Our neutron scattering results reveal an unusual antiparallel alignment of Pr and Fe magnetic moments. In addition, XMCD measurements in pulsed magnetic fields up to 28 T indicate a continuous rotation of the Nd moment towards the Fe moment.