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MA: Fachverband Magnetismus
MA 4: Magnetic Heusler Compounds and Complex Magnetic Oxides
MA 4.10: Vortrag
Montag, 18. März 2024, 12:00–12:15, EB 107
Magnetic and lattice properties of KEr(MoO4)2 in magnetic fields up to 50 tesla — •D. Kamenskyi1, L. Prodan1, K. Kutko2, V. Khrustalyov2, S. Khmelevskyi3, L. Pourovskii4, B. Bernath5, and Y. Skourski6 — 1Experimental Physics V, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg — 2B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine — 3Research Center for Materials Science and Engineering, Vienna University of Technology, Austria — 4CPHT, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, France — 5HFML-EMFL, Radboud University, Nijmegen, The Netherlands — 6HLD-EMFL, Helmholtz-Zentrum Dresden-Rossendorf, Germany
We report a magnetisation and magnetosriction study of the rare-earth-based paramagnet KEr(MoO4)2 in magnetic fields up to 50 T. Recent observation of massive magnetostriction and rotational magnetocaloric effects triggered the interest to study the microscopic mechanism behind this phenomena. We combine several experimental techniques to investigate the magnetisation behaviour until saturation. The synergy of magnetic torque measurements and vibrating sample magnetometry allowed us to reconstruct parallel and perpendicular magnetisation, enabling us to trace its evolution up to 30 T. Our experiments reveal the saturation along all principle axes is well below the value expected from crystal electric field calculations. We argue that an applied magnetic field distorts the local environment of Er3+ ions and affects its crystal electric field splitting.
Keywords: Magnetostriction; Magnetisation; Rare-earth; Paramagnet