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Study of the Properties of Sm–Fe–Co–Ti–H Compounds with ThMn\({}_{\mathbf{12}}\)–Type Structure by Magnetometry, Atomic Force Microscopy, and Magnetic Force Microscopy

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Abstract

The type of magnetocrystalline anisotropy (MCA) of Sm–Fe–Co–Ti alloys and their hydrides with a ThMn\({}_{12}\)-type structure has been established by magnetometry at room temperature. Using atomic force microscopy (AFM) in combination with magnetic force microscopy (MFM), the state of their surface was studied. The initial SmFe\({}_{11}\)Ti and SmFe\({}_{5}\)Co\({}_{6}\)Ti samples were obtained by argon arc melting. The SmFe\({}_{11}\)Ti alloy was subjected to a hydrogenation procedure, as a result of which the SmFe\({}_{11}\)TiH\({}_{0.4}\) and SmFe\({}_{11}\)TiH\({}_{1}\) samples were synthesized. Using AFM and MFM, the features of topography, defects of the investigated surfaces, domain structure, morphology of magnetic inclusions of the initial samples and their hydrides were established. The main magnetic characteristics of the Sm–Fe–Co–Ti–H system obtained using magnetometry have been compared with the results of MFM studies.

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Funding

This study was supported by the Russian Science Foundation (project no. 18-13-00135).

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Authors and Affiliations

  1. Department of Physics, Moscow State University, 119991, Moscow, Russia

    T. P. Kaminskaya & I. S. Tereshina

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  1. T. P. Kaminskaya
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  2. I. S. Tereshina
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Correspondence to T. P. Kaminskaya or I. S. Tereshina.

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Translated by D. Churochkin

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Kaminskaya, T.P., Tereshina, I.S. Study of the Properties of Sm–Fe–Co–Ti–H Compounds with ThMn\({}_{\mathbf{12}}\)–Type Structure by Magnetometry, Atomic Force Microscopy, and Magnetic Force Microscopy. Moscow Univ. Phys. 75, 631–637 (2020). https://doi.org/10.3103/S0027134920060107

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