Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

Формат представления найденных документов:
полный	информационный	краткий

Поисковый запрос: (<.>K=superferromagnetism<.>)

Общее количество найденных документов : 1

Magneto-optical spectroscopy of nanocomposites (CoFeZr)x(Al2O3)100-x / E. A. Gan’shina, A. B. Granovsky, V. V. Garshin [et al.] // SPIN. - 2023. - Vol. 13, Is. 1. - Ст. 2340006, DOI 10.1142/S2010324723400064. - Cited References: 17. - This work was supported in part by the Russian Foundation for Basic Research under Grant 22-29-00392. Magnetic and MO studies were performed using equipment purchased at the expense of the MSU The authors thank the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” for assistance . - ISSN 2010-3247. - ISSN 2010-3255
Кл.слова (ненормированные):
Superparamagnetism -- superferromagnetism -- nanocomposites -- magneto-optical spectra
Аннотация: We present results of magneto-optical investigations of (CoFeZr)x(Al2O3)100-x film nanocomposites in transverse Kerr effect (TKE) geometry in the spectral range 0.5-4.0eV and magnetic field up to 3.0kOe. Nanocomposites were deposited onto a glass-ceramic substrate by ion-beam sputtering. The TKE response at room temperature strongly depends on the wavelength of light, applied magnetic field H and the volume metallic fraction. From the analysis of the field dependences of TKE at different wavelengths, it follows that in the as-deposited samples, the interaction between nanoparticles at x<30at.% is small and the nanocomposite is an ensemble of superparamagnetic particles; as x increases to 32at.%, a superspinglass-type state arises, then, in the vicinity of 34at.%, along with individual superparamagnetic particles, superferromagnetic regions appear. Long-range ferromagnetic order arises at concentrations x less than the percolation threshold for conductivity xper=42.6at.%. In the presence of two different magnetic states in the samples, TKE is not proportional to the magnetization. Both the field dependences at near-infrared region and the spectral dependences of TKE change significantly after annealing of the samples, while the changes in the field dependences of the magnetization are almost imperceptibly.

Смотреть статью,
WOS,
Читать в сети ИФ
Держатели документа:
Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
Voronezh State Technical University, Voronezh 394026, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
National Research Centre “Kurchatov Institute”, Moscow 123182, Russia

Доп.точки доступа:
Gan’shina, Elena A.; Granovsky, Alexandr B.; Garshin, Vladimir V.; Pripechenkov, Ilya M.; Sitnikov, Alexandr V.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Ryl’kov, Vladimir V.; Nikolaev, Sergey N.
}
Найти похожие