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A Study of the Nature of the NMR Signal in Lithium Ferrite upon Exposure to a Low-Frequency Magnetic Field

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

The effect of modulation of the decay envelope of the echo signal of 57Fe nuclei in lithium ferrite is studied experimentally, which demonstrates its intrawall origin. In contrast to cobalt characterized by a large modulating anisotropic component of the hyperfine field, which acts on nuclei in domain walls upon displacement of the latter, the manifestation of strong modulation effect in low anisotropic lithium ferrite with a relatively high mobility of domain walls is possibly caused by additional dynamic modulating effects associated with a high mobility of domain walls in this material.

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Funding

This study was supported by a joint grant from the Shota Rustaveli Georgian National Science Foundation (Agreement #STCU-2017-31) and the Science and Technology Center in Ukraine (no. 7081).

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Authors and Affiliations

  1. Andronikashvili Institute of Physics, Javakhishvili Tbilisi State University, 0177, Tbilisi, Georgia

    G. I. Mamniashvili & T. O. Gegechkori

  2. Dzhavakhishvili Tbilisi State University, 0179, Tbilisi, Georgia

    Ts. A. Gavasheli

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  1. G. I. Mamniashvili
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  2. T. O. Gegechkori
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  3. Ts. A. Gavasheli
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Correspondence to Ts. A. Gavasheli.

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Translated by O. Kadkin

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Mamniashvili, G.I., Gegechkori, T.O. & Gavasheli, T.A. A Study of the Nature of the NMR Signal in Lithium Ferrite upon Exposure to a Low-Frequency Magnetic Field. Phys. Metals Metallogr. 122, 841–846 (2021). https://doi.org/10.1134/S0031918X21090088

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  • DOI: https://doi.org/10.1134/S0031918X21090088

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