Size Effects in the Formation of an Uncompensated Ferromagnetic Moment in NiO Nanoparticles | Sciact - CRIS-система Института катализа

Size Effects in the Formation of an Uncompensated Ferromagnetic Moment in NiO Nanoparticles Научная публикация

Журнал

Journal of Applied Physics
ISSN: 0021-8979 , E-ISSN: 1089-7550

Вых. Данные

Год: 2019, Том: 126, Номер: 10, Номер статьи : 103904, Страниц : 8 DOI: 10.1063/1.5109054

Ключевые слова

MAGNETIC-PROPERTIES; TEMPERATURE; SUSCEPTIBILITY; NANOFERRIHYDRITE; HYSTERESIS; SUBSYSTEMS; DEPENDENCE; ANOMALIES; BEHAVIOR; FIELDS

Авторы

Popkov S.I. ¹ , Krasikov A.A. ¹ , Dubrovskiy A.A. ¹ , Volochaev M.N. ¹ , Kirillov V.L. ² , Martyanov O.N. ² , Balaev D.A. ¹

Организации

1	Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
2	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Информация о финансировании (4)

1	Российский фонд фундаментальных исследований	18-42-240012 (АААА-А18-118102390052-8)
2	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)
3	Красноярский краевой фонд поддержки научной и научно-технической деятельности
4	Правительство Красноярского края

The magnetic properties of samples of NiO nanoparticles with average sizes of 23, 8.5, and 4.5 nm were investigated. Using the magnetization curves measured in strong (up to 250 kOe) pulsed magnetic fields, the contributions of the free spin and ferromagnetic subsystems were extracted. It has been found that the ferromagnetic contribution increases with a decrease in the nanoparticle size and is proportional to the fraction of uncompensated exchange-coupled spins. It is demonstrated that the uncompensated spins form in the antiferromagnetic NiO oxide due to an increase in the fraction of surface atoms in the nanoparticles with decreasing particle size and defects in the bulk of particles. © 2019 Author(s).

Popkov S.I. , Krasikov A.A. , Dubrovskiy A.A. , Volochaev M.N. , Kirillov V.L. , Martyanov O.N. , Balaev D.A.
Size Effects in the Formation of an Uncompensated Ferromagnetic Moment in NiO Nanoparticles
Journal of Applied Physics. 2019. V.126. N10. 103904 :1-8. DOI: 10.1063/1.5109054 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	8 мая 2019 г.
Принята к публикации:	20 авг. 2019 г.
Опубликована online:	11 сент. 2019 г.
Опубликована в печати:	14 сент. 2019 г.

Web of science:	WOS:000486028500042
Scopus:	2-s2.0-85072192371
РИНЦ:	41676855
Chemical Abstracts:	2019:1765165
OpenAlex:	W2972538360

БД	Цитирований
Scopus	27
Web of science	27
РИНЦ	24
OpenAlex	28