Тип публикации: статья из журнала

Год издания: 2023

Идентификатор 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 frПоказать полностьюeshly 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>

Журнал: Physics of the Solid State

Выпуск журнала: Т. 65, № 6

Номера страниц: 963

ISSN журнала: 10637834

Место издания: Saint Petersburg

Издатель: Физико-технический институт им. А.Ф. Иоффе РАН

• Stolyar S. V. (Siberian State University of Science and Technology, Krasnoyarsk, Russia)
• Li O. A. (Siberian State University of Science and Technology, Krasnoyarsk, Russia)
• Nikolaeva E. D. (Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia)
• Boev N. M. (Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia)
• Vorotynov A. M. (Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia)
• Velikanov D. A. (Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia)
• Iskhakov R. S. (Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia)
• P'yankov V. F. (Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia)
• Knyazev Yu. V. (Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia)
• Bayukov O. A. (Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia)
• Shokhrina A. O. (Siberian State University of Science and Technology, Krasnoyarsk, Russia)
• Molokeev M. S. (Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia)
• Vasiliev A. D. (Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia)

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