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Theoretical investigation of magnetic resonance spectra of frustrated pseudoperovskite manganites

Russian version

DOI: 10.61011/EOS.2023.04.56357.57-22

Gonchar L. E.

^1,2

¹Ural State University of Railway Transport, Yekaterinburg, Russia
²Ural Federal University after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia

Email: l.e.gonchar@urfu.ru

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Abstract
References
Статистика просмотров

The magnetic resonance spectra of frustrated manganite compounds La_1/3Ca_2/3MnO₃ and BiMnO₃ 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 Mn³⁺ 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. DOI: 10.61011/EOS.2023.04.56357.57-22

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