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Heating of magneticpowders in theferromagneticresonance mode at afrequency of 8.9 GHz Stolyar S. V.Li O. A.Nikolaeva E. D.2023 год

Heating of magnetic powders in the ferromagnetic resonance mode at a frequency of 8.9 GHz
статья из журнала

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База данных: Каталог библиотеки СФУ
Библиографическое описание: Heating of magnetic powders in the ferromagnetic resonance mode at a frequency of 8.9 GHz : научное издание / Stolyar S. V. [et al.]. - Текст : непосредственный // Physics of the Solid State. - 2023. - Т. 65, № 6. - P. 963. - ISSN 1063-7834. - ISSN 1090-6460, DOI 10.21883/pss.2023.06.56109.21h.
Аннотация: <jats:p> Nickel ferrite nanoparticles 4 nm in size were synthesized by chemical deposition. Subsequent annealing at T=700<jats:sup>o</jats:sup>C for 5 h led to an increase in the particle size to 63 nm. The Mossbauer spectra and the frequency-field dependences of ferromagnetic resonance have been measured. It has been shown that freshly prepared powders are superparamagnetic at room temperature. The kinetic dependences of the heating of nanoparticles in the ferromagnetic resonance mode at a frequency of 8.9 GHz were measured. It was found that the maximum rate of temperature increase in this mode for a ferromagnetic powder is an order of magnitude greater than for the superparamagnetic state (1.2 and 0.13 K/s, respectively). The latter is determined by the saturation magnetization of the studied powders. Keywords: ferromagnetic resonance, superparamagnetic powders, relaxation frequency, frequency-field dependence, heating of powders. </jats:p>
Год издания: 2023
Авторы: Stolyar S. V. , Li O. A. , Nikolaeva E. D. , Boev N. M. , Vorotynov A. M. , Velikanov D. A. , Iskhakov R. S. , P'yankov V. F. , Knyazev Yu. V. , Bayukov O. A. , Shokhrina A. O. , Molokeev M. S. , Vasiliev A. D.
Издательство: Физико-технический институт им. А.Ф. Иоффе РАН, Saint Petersburg
Источник: Physics of the Solid State
Выпуск: Т. 65, № 6
Номера страниц: 963
Держатель оригинала документа: Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia, Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia, Siberian State University of Science and Technology, Krasnoyarsk, Russia
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