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MA: Fachverband Magnetismus
MA 27: Frustrated Magnets I
MA 27.10: Talk
Wednesday, March 20, 2024, 17:30–17:45, H 2013
Magnetic interaction and anisotropy in frustrated GdInO3 probed by electron spin resonance spectroscopy — •Luca Bischof1, Rahel Ohlendorf1, Ning Yuan1, Hans-Albrecht Krug von Nidda2, and Rüdiger Klingeler1 — 1Kirchhoff Institute for Physics, Heidelberg University, Germany — 2Experimental Physics V, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, Germany
Rare earth (R) ions on a triangular lattice as in the ferroelectric RInO3 have recently emerged as a great possibility to study the physics of magnetically frustrated systems. Here we report X- and Q-band electron spin resonance spectroscopy probing the spin-only magnetism of single-crystal [1] gadolinium indate GdInO3. Temperature- and angle-dependence of the observed paramagnetic resonance reveal anisotropic magnetic behavior of the system. We find weak single-ion anisotropy (|D|≈ 4 GHz) of the Gd-spins using a combined line-width analysis of angular dependencies in X- and Q-band data under consideration of the 10/3-effect. Our data further allow us to quantify the strength of dipolar and isotropic exchange interactions showing that the latter dominantly governs the spin dynamics in GdInO3.
[1] N. Yuan et al., Phys. Rev. B 108, 224403 (2023).
Keywords: Rare Earth Indates; Magnetic Frustration; Single-ion anisotropy; Dipolar interaction; Electron Spin Resonance (ESR/EPR)