I. L. Kalentyeva, O. V. Vikhrova, Yu. A. Danilov, M. V. Dorokhin, Yu. A. Dudin, A. V. Zdoroveyshchev, A. V. Kudrin, M. P. Temiryazeva, A. G. Temiryazev, S. A. Nikitov, A. V. Sadovnikov, “Modifying the magnetic properties of the CoPt alloy by ion irradiation”, Fizika Tverdogo Tela, 2019, Volume 61, Issue 9,Pages <nobr>1694

This article is cited in 9 papers

XXIII International Symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 11--14, 2019
Magnetism

Modifying the magnetic properties of the CoPt alloy by ion irradiation

I. L. Kalentyeva^a, O. V. Vikhrova^a, Yu. A. Danilov^a, M. V. Dorokhin^a, Yu. A. Dudin^a, A. V. Zdoroveyshchev^a, A. V. Kudrin^a, M. P. Temiryazeva^b, A. G. Temiryazev^b, S. A. Nikitov^cde, A. V. Sadovnikov^cd

^a Scientific-Research Physicotechnical Institute at the Nizhnii Novgorod State University, Nizhnii Novgorod
^b Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences
^c Metamaterials Laboratory, National Research Chernyshevsky Saratov State University, Saratov, Russia
^d Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow
^e Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region

Abstract: The effect of ion irradiation on the magnetic properties of films of the ferromagnetic CoPt alloy made by the method of electron beam evaporation is investigated. It has been established that with an increase in the He+ ion fluence from 1 $\times$ 10$^{13}$ to 1 $\times$ 10$^{16}$ cm$^{-2}$, a decrease in the coercive field and an increase in the planar component of the axis of easy magnetization are observed. Using magnetic force microscopy and Mandel'shtam-Brillouin spectroscopy, it was shown that with certain ion fluence (3 $\times$ 10$^{14}$ cm$^{-2}$), the formation of isolated round domains representing magnetic skyrmions is observed in the CoPt layer.

Keywords: electron beam evaporation, ferromagnetic alloy, ion irradiation, isolated round domains.

Received: 15.04.2019
Revised: 22.04.2019
Accepted: 24.04.2019

DOI: 10.21883/FTT.2019.09.48112.20N