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Formation of Unidirectional Magnetic Anisotropy in a Spin Valve Containing a Dysprosium Layer

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

The dependence of the Neel temperature on the thickness of the dysprosium layer has been studied. It is shown that the temperature range within which the paramagnetic–antiferromagnetic phase transition takes place depends on the microstructure and thickness of the dysprosium layer. Spin valves based on a CoFe alloy with dysprosium as an antiferromagnetic layer are manufactured via magnetron sputtering. It is shown that unidirectional anisotropy forms in the CoFe/Dy interface. The direction of the exchange bias field depends on the direction of the magnetic moment of the CoFe layer in the formation of exchange coupling.

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ACKNOWLEDGMENTS

The structural studies were carried out at the Testing Center for Nanotechnologies and Advanced Materials Center for Collective Use of the Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences.

Funding

This study was performed within the state task from the Ministry of Science and Higher Education (project “Spin” no. AAAAA18-118020290104-2) and supported in part by the Russian Foundation for Basic Research (project no. 19‑02-00057).

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Authors and Affiliations

  1. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108, Ekaterinburg, Russia

    L. I. Naumova, R. S. Zavornitsyn, M. A. Milyaev, M. V. Makarova, V. V. Proglyado & V. V. Ustinov

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  1. L. I. Naumova
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  2. R. S. Zavornitsyn
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  3. M. A. Milyaev
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  4. M. V. Makarova
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  5. V. V. Proglyado
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  6. V. V. Ustinov
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Corresponding author

Correspondence to R. S. Zavornitsyn.

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Translated by E. Glushachenkova

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Naumova, L.I., Zavornitsyn, R.S., Milyaev, M.A. et al. Formation of Unidirectional Magnetic Anisotropy in a Spin Valve Containing a Dysprosium Layer. Phys. Metals Metallogr. 122, 540–546 (2021). https://doi.org/10.1134/S0031918X21060089

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  • DOI: https://doi.org/10.1134/S0031918X21060089

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