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MA: Fachverband Magnetismus
MA 52: Poster Magnetism III
MA 52.34: Poster
Donnerstag, 12. März 2026, 15:00–17:00, P4
FMR in chiral Mn2TiO4 — •Amruthavarshini Anand1, Rajendra Loke1, Ahmed Rasheed1, Agustinus Agung Nugroho2, and Joachim Hemberger1 — 1Institute of Physics II, University of Cologne, 50937 Cologne, Germany — 2Institut Teknologi Bandung, Bandung 40116, Indonesia.
Ferromagnetic resonance (FMR) is a powerful technique for probing the dynamic magnetic properties of materials. In this study, we investigate FMR in Mn2TiO4, an inverse spinel tetragonal oxide. When Mn occupy full of tetrahedrally coordinated A site and half of B site, the space group P4322, posses a chiral axis along c. Which via spin orbit coupling influences the magnetic resonance.
FMR measurements performed across different frequencies and magnetic field orientations allow us to extract resonance fields, linewidths, damping parameters, and magnetic anisotropy constants. Analysis of the FMR data using Kittel fitting enables determination of the frequency-field relationship, effective magnetization, and g-factors, while linewidth fitting provides quantitative values of the Gilbert damping parameter. And we also performed a FMR configuration with circularly polarized microwave excitation to enhance sensitivity to chiral magnetic effects and enable a more comprehensive investigation of the system’s frequency- and field-dependent behaviour.
Keywords: Ferromagnetic resonance (FMR); Chiral magnetism; Magnetic anisotropy; Gilbert damping; Circularly polarized microwaves