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TT: Fachverband Tiefe Temperaturen
TT 58: f-Electron Systems and Heavy Fermions
TT 58.5: Talk
Friday, March 21, 2025, 12:30–12:45, H31
Anisotropic antiferromagnetic order in EuPd3Si2 — •Michelle Ocker1, Nour Marayatta2, Michael Merz2, Kristin Kliemt1, and Cornelius Krellner1 — 1Physikalisches Institut, Goethe Universität Frankfurt, 60438 Frankfurt/Main, Germany — 2Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
The magnetic order of a rare earth compounds is determined by the RKKY exchange interaction. In case of Eu compounds small changes in the growth method or the initial composition can potentially lead to small composition changes which than modify the physical properties [1]. For example, the compound EuPd3Si2, which crystallises in the orthorhombic space group Imma, shows a ferromagnetic transition at TC1 = 78 K and a spin reorientation at TC2 = 5 K according to Ref. [2]. Whereas our EuPd3Si2 samples show an antiferromagnetic transition at TN1 = 61 K and a possible reorientation at TN2 = 40 K.
With field aligned along the three main symmetrie directions, our samples show different degrees of anisotropy, as has been observed for related
compounds [3].
In this presentation, we report about the crystal growth and our evaluation of the physical properties, from which we constructed a magnetic
phase diagram.
[1] K.Kliemt et al. Cryst. Growth Des. 22, 5399 (2022).
[2] S.Sharma et al. Phys. Rev. Mater. 7, 023402 (2023).
[3] K.Shigetoh et al. Phys. Rev. B 76, 184429 (2007).
Keywords: crystal growth; anisotrop; antiferromagnetic; Europium