This article is cited in 4 scientific papers (total in 4 papers)
XXIV International Symposium Nanophysics and Nanoelectronics, Nizhny Novgorod, March 10-13, 2020 Metals
General regularities and differences in the behavior of the dynamic magnetization switching of ferrimagnetic (CoFe$_2$O$_4$) and antiferromagnetic (NiO) nanoparticles
Abstract:
In antiferromagnetic (AFM) nanoparticles, an additional ferromagnetic phase forms and leads to the appearance in AFM nanoparticles of a noncompensated magnetic moment and the magnetic properties typical of common FM nanoparticles. In this work, to reveal the regularities and differences of the dynamic magnetization switching in FM and AFM nanoparticles, the typical representatives of such materials are studied: CoFe$_2$O$_4$ and NiO nanoparticles with average sizes 6 and 8 nm, respectively. The high fields of the irreversible behavior of the magnetizations of these samples determine the necessity of using strong pulsed fields (amplitude to 130 kOe) to eliminate the effect of the partial hysteresis loop when studying the dynamic magnetic hysteresis. For both types of the samples, coercive force $H_C$ at the dynamic magnetization switching is markedly higher than $H_C$ at quasi-static conditions. $H_C$ increases as the pulse duration $\tau_P$ decreases and the maximum applied field $H_0$ increases. The dependence of $H_C$ on field variation rate $dH/dt=H_{0}/2\tau_{P}$ is a unambiguous function for CoFe$_2$O$_4$ nanoparticles, and it is precisely such a behavior is expected from a system of single-domain FM nanoparticles. At the same time, for AFM NiO nanoparticles, the coercive force is no longer an unambiguous function of $dH/dt$, and the value of applied field $H_0$ influences more substantially. Such a difference in the behaviors of FM and AFM nanoparticles is caused by the interaction of the FM subsystem and the AFM “core” inside AFM nanoparticles. This circumstance should be taken into account when developing the theory of dynamic hysteresis of the AFM nanoparticles and also to take into account their practical application.
This work was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk region, and the Krasnoyarsk Regional Foundation for Science, project no. 18-42-240012: “Magnetization switching of magnetic nanoparticles in strong pulsed magnetic fields is a new approach to studying the dynamic effects related to the processes of magnetization of magnetic nanoparticles”.
Citation:
S. I. Popkov, A. A. Krasikov, S. V. Semenov, A. A. Doubrovskii, S. S. Yakushkin, V. L. Kirillov, O. N. Mart'yanov, D. A. Balaev, “General regularities and differences in the behavior of the dynamic magnetization switching of ferrimagnetic (CoFe$_2$O$_4$) and antiferromagnetic (NiO) nanoparticles”, Fizika Tverdogo Tela, 62:9 (2020), 1354–1360; Phys. Solid State, 62:9 (2020), 1518–1524
\Bibitem{PopKraSem20}
\by S.~I.~Popkov, A.~A.~Krasikov, S.~V.~Semenov, A.~A.~Doubrovskii, S.~S.~Yakushkin, V.~L.~Kirillov, O.~N.~Mart'yanov, D.~A.~Balaev
\paper General regularities and differences in the behavior of the dynamic magnetization switching of ferrimagnetic (CoFe$_2$O$_4$) and antiferromagnetic (NiO) nanoparticles
\jour Fizika Tverdogo Tela
\yr 2020
\vol 62
\issue 9
\pages 1354--1360
\mathnet{http://mi.mathnet.ru/ftt8301}
\crossref{https://doi.org/10.21883/FTT.2020.09.49753.25H}
\elib{https://elibrary.ru/item.asp?id=44154213}
\transl
\jour Phys. Solid State
\yr 2020
\vol 62
\issue 9
\pages 1518--1524
\crossref{https://doi.org/10.1134/S1063783420090255}
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This publication is cited in the following 4 articles:
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JiYu Shen, JiaJun Mo, YuChen Tao, YanFang Xia, Min Liu, “Magnetic and Mössbauer Spectroscopy of Co/MgFe2O4 Spinel”, J Low Temp Phys, 209:1-2 (2022), 166
Yu.V. Knyazev, D.A. Balaev, S.V. Stolyar, A.A. Krasikov, O.A. Bayukov, M.N. Volochaev, R.N. Yaroslavtsev, V.P. Ladygina, D.A. Velikanov, R.S. Iskhakov, “Interparticle magnetic interactions in synthetic ferrihydrite: Mössbauer spectroscopy and magnetometry study of the dynamic and static manifestations”, Journal of Alloys and Compounds, 889 (2021), 161623
D.A. Balaev, A.A. Krasikov, S.I. Popkov, S.V. Semenov, M.N. Volochaev, D.A. Velikanov, V.L. Kirillov, O.N. Martyanov, “Uncompensated magnetic moment and surface and size effects in few-nanometer antiferromagnetic NiO particles”, Journal of Magnetism and Magnetic Materials, 539 (2021), 168343