This article is cited in 1 paper

The 18th International Theophilus Symposium (IFAC-2022) on Spectroscopy of Crystals Activated by Ions of Rare Earths and Transition Metals (August 22-26, 2022, Moscow)

Theoretical investigation of magnetic resonance spectra of frustrated pseudoperovskite manganites

L. È. Gonchar<sup>ab

a</sup> Ural State University of Railway Transport, 620034 Yekaterinburg, Russia
^b Ural Federal University named after the First President of Russia B. N. Yeltsin, 620002 Yekaterinburg, Russia

Abstract: The magnetic resonance spectra of frustrated manganite compounds La$_{1/3}$Ca$_{2/3}$MnO$_3$ and BiMnO$_3$ are calculated within the framework of orbitally dependent magnetic interactions model. The aim of the paper is an investigation of orbital structure influence and superexchange interactions’ competition effects on ferromagnetic or antiferromagnetic resonance spectra of these compounds. The description of the features of the resonance lower branches’ dependencies on the magnitude and direction of the magnetic field is proposed. It is shown that the main influence on the symmetry of dependencies is exerted by single-ion anisotropy of the Mn$^{3+}$ ion, associated not only with the orbital structure, but also with the tilting distortions of oxygen octahedra around the ions.

Keywords: manganites, orbital structure, multi-sublattice magnets, antiferromagnetic resonance.

Received: 30.10.2022
Revised: 09.01.2023
Accepted: 28.03.2023

DOI: 10.21883/OS.2023.04.55554.57-22

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