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Effect of Structural Inhomogeneities on the Spin-Wave and Magnetic Properties of Monocrystalline Spinel Ferrite Films in the Microwave Range

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Abstract—

We have studied magnetic parameters of monocrystalline manganese spinel ferrite films differing in composition and structural perfection and assessed the effect of dislocation distribution on the frequency dependence of the ferromagnetic resonance (FMR) linewidth in the microwave range. The results demonstrate that, if an external magnetic field is perpendicular to the film surface, electron paramagnetic resonance (EPR) absorption lines correspond to ferromagnetic and spin wave resonances (SWRs). SWR is due to nanostructural surface inhomogeneities. The EPR spectrum of a tangently magnetized film represents a single dipole exchange oscillation spectrum. Parameters of dipole and exchange modes have been determined.

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Authors and Affiliations

  1. Samara State Technical University, Molodogvardeiskaya ul. 244, 443100, Samara, Russia

    Yu. V. Velikanova, E. A. Kosareva, L. A. Mitlina & N. V. Meleshko

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  1. Yu. V. Velikanova
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  2. E. A. Kosareva
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  3. L. A. Mitlina
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  4. N. V. Meleshko
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Correspondence to Yu. V. Velikanova.

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Translated by O. Tsarev

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Velikanova, Y.V., Kosareva, E.A., Mitlina, L.A. et al. Effect of Structural Inhomogeneities on the Spin-Wave and Magnetic Properties of Monocrystalline Spinel Ferrite Films in the Microwave Range. Inorg Mater 55, 1206–1213 (2019). https://doi.org/10.1134/S0020168519120136

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  • DOI: https://doi.org/10.1134/S0020168519120136

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