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Magnetic Properties of Few Nanometers ɛ-Fe2O3 Nanoparticles Supported on the Silica Научная публикация

Журнал Journal of Applied Physics
ISSN: 0021-8979 , E-ISSN: 1089-7550
Вых. Данные Год: 2012, Том: 111, Номер: 4, Страницы: 044312 Страниц : 5 DOI: 10.1063/1.3686647
Ключевые слова Iron oxides; Magnetic moments; Magnetic properties; Silica; Superparamagnetism
Авторы Yakushkin S.S. 1 , Dubrovskiy A.A. 2 , Balaev D.A. 2 , Shaykhutdinov K.A. 2 , Bukhtiyarova G.A. 1 , Martyanov O.N. 1
Организации
1 Boreskov Institute of Catalysis, Russian Academy of Sciences, Siberian Branch, Novosibirsk, 630090 Russia
2 Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036 Russia

Информация о финансировании (1)

1 Президиум РАН 27.46

Реферат: Magnetic properties of ɛ-Fe2O3nanoparticles supported on silica with the average size of few nanometers, narrow size distribution and no admixture of any other iron oxide polymorphs are investigated. The investigation of the temperature behavior of magnetization within the temperature range from 4.2 to 1000 K revealed the presence of several magnetic subsystems in the species under study. The temperatures’ behavior of the magnetic moment value indicates ferrimagnetic ordering in the ɛ-Fe2O3nanoparticles with a Curie temperature of about 800 K and points to the existence of a significant paramagnetic contribution becoming apparent at low temperatures. According to the electron spin resonance data, the particles possess superparamagnetic behavior at temperature higher ∼120 K. The model of the magnetic structure of monophase system of few nanometers ɛ-Fe2O3nanoparticles supported on silica is proposed.
Библиографическая ссылка: Yakushkin S.S. , Dubrovskiy A.A. , Balaev D.A. , Shaykhutdinov K.A. , Bukhtiyarova G.A. , Martyanov O.N.
Magnetic Properties of Few Nanometers ɛ-Fe2O3 Nanoparticles Supported on the Silica
Journal of Applied Physics. 2012. V.111. N4. P.044312. DOI: 10.1063/1.3686647 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
Поступила в редакцию: 1 нояб. 2011 г.
Принята к публикации: 23 янв. 2012 г.
Опубликована в печати: 15 февр. 2012 г.
Опубликована online: 23 февр. 2012 г.
Идентификаторы БД:
Web of science: WOS:000300948600090
Scopus: 2-s2.0-84857852078
РИНЦ: 17979159
Chemical Abstracts: 2012:280113
Chemical Abstracts (print): 156:301081
OpenAlex: W2012694739
Цитирование в БД:
БД Цитирований
Web of science 26
Scopus 26
РИНЦ 27
OpenAlex 26
Альметрики: