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General Regularities and Differences in the Behavior of the Dynamic Magnetization Switching of Ferrimagnetic (CoFe2O4) and Antiferromagnetic (NiO) Nanoparticles Научная публикация

Журнал Physics of the Solid State
ISSN: 1063-7834 , E-ISSN: 1090-6460
Вых. Данные Год: 2020, Том: 62, Номер: 9, Страницы: 1518-1524 Страниц : 7 DOI: 10.1134/S1063783420090255
Ключевые слова CoFe2O4 nanoparticles, antiferromagnetic NiO nanoparticles, dynamic magnetization switching, coercive force
Авторы Popkov S.I. 1,2 , Krasikov A.A. 1 , Semenov S.V. 1,2 , Dubrovskii A.A. 1 , Yakushkin S.S. 3 , Kirillov V.L. 3 , Mart’yanov O.N. 3 , Balaev D.A. 1,2
Организации
1 Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036 Russia
2 Siberian Federal University, Krasnoyarsk, 660041 Russia
3 Boreskov Institute of Catalisis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia

Информация о финансировании (1)

1 Российский фонд фундаментальных исследований 18-42-240012 (АААА-А18-118102390052-8)

Реферат: 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: CoFe2O4 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 HC at the dynamic magnetization switching is markedly higher than HC at quasi-static conditions. HC increases as the pulse duration τP decreases and the maximum applied field H0 increases. The dependence of HC on field variation rate dH/dt = H0/2τP is a unambiguous function for CoFe2O4 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 H0 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.
Библиографическая ссылка: Popkov S.I. , Krasikov A.A. , Semenov S.V. , Dubrovskii A.A. , Yakushkin S.S. , Kirillov V.L. , Mart’yanov O.N. , Balaev D.A.
General Regularities and Differences in the Behavior of the Dynamic Magnetization Switching of Ferrimagnetic (CoFe2O4) and Antiferromagnetic (NiO) Nanoparticles
Physics of the Solid State. 2020. V.62. N9. P.1518-1524. DOI: 10.1134/S1063783420090255 WOS Scopus РИНЦ CAPlusCA OpenAlex
Оригинальная: Попков С.И. , Красиков А.А. , Семенов С.В. , Дубровский А.А. , Якушкин C.С. , Кириллов В.Л. , Мартьянов О.Н. , Балаев Д.А.
Общие закономерности и различия в поведении динамического перемагничивания ферримагнитных (CoFe2O4) и антиферромагнитных (NiO) наночастиц
Физика твердого тела. 2020. Т.62. №9. С.1354-1360. DOI: 10.21883/FTT.2020.09.49753.25HRSCI РИНЦ OpenAlex
Даты:
Поступила в редакцию: 26 мар. 2020 г.
Принята к публикации: 2 апр. 2020 г.
Опубликована в печати: 1 сент. 2020 г.
Опубликована online: 9 сент. 2020 г.
Идентификаторы БД:
Web of science: WOS:000567516500002
Scopus: 2-s2.0-85090879806
РИНЦ: 45333070
Chemical Abstracts: 2020:1895530
Chemical Abstracts (print): 174:46942
OpenAlex: W3084828985
Цитирование в БД:
БД Цитирований
Web of science 4
Scopus 3
РИНЦ 3
OpenAlex 4
Альметрики: