Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 52: Poster Magnetism III
MA 52.35: Poster
Donnerstag, 12. März 2026, 15:00–17:00, P4
Magnetic interactions in compositionally complex and high entropy perovskites BaIn1-xMxO3-δ (M = Fe, Co, Sn, Ti) — •Auguste Stanionyte1, Laura T. Corredor2, Richard Matyšek2, 3, Anja U. B. Wolter4, Giuditta Perversi3, and Anna Isaeva1, 2 — 1University of Amsterdam, The Netherlands — 2TU Dortmund University and Research Center Future Energy Materials and Systems, Germany — 3Maastricht University, The Netherlands — 4Leibniz IFW Dresden, Germany
High configurational entropy exerts unprecedented effects on a material’s phase stability and functional properties and raises questions about possible interrelationships between the two.[1] In our recent work, the BaIn1-xMxO3-δ series were obtained as phase-pure cubic perovskites where Co, Fe, Sn, Ti and In share the B-site in increasing configurational entropy.[2] The present study investigates the magnetic behavior of these compounds. We observe antiferromagnetic-like behavior in the M(T) curves below 20 K, and varying levels of hysteresis in the M(H) experiments at 2K. Specific heat measurements show a field-dependent magnetic entropy release at low temperatures, but neutron diffraction rules out long-range order. With AC susceptibility measurements showing a shift in transition temperatures for higher frequencies, the study so far indicates a glassy magnetic structure with clusters. Altogether, our experimental results give an intriguing look into the emergent properties of such complex and disordered structures, but the exact microscopic mechanism remains to be uncovered. [1] Adv. Sci. (2022) 9, 2200391; [2] Solid State Ion. (2024) 427, 116901.
Keywords: High entropy; Compositionally complex; Perovskite oxides