Features of Dispersion of Dimensional and Magnetic Parameters in Spinel Ferrite Nanoparticles
V. O. Zamorskyi$^{1}$, S. O. Solopan$^{2}$, A. G. Belous$^{2}$, A. I. Tovstolytkin$^{1}$
$^{1}$Institute of Magnetism under NAS of Ukraine and MES of Ukraine, 36b Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
$^{2}$V. I. Vernadsky Institute of General and Inorganic Chemistry, NAS of Ukraine, 32/34 Academician Palladin Ave., UA-03142 Kyiv, Ukraine
Received: 29.10.2020; final version - 15.10.2021. Download: PDF
The analysis of the magnetization curves of $A$Fe$_2$O$_4$ ($A$ = Ni, Zn, Co) nanopowders displaying superparamagnetic-like behaviour is performed. The distribution functions of nanoparticles in terms of magnetic moment and size are determined. As shown, the size distribution function obtained from the magnetic characteristics makes it possible to adequately describe the behaviour of an ensemble of nanoparticles containing weakly magnetic or nonmagnetic shells. As concluded, the proposed approach is effective for analysing the dispersion of the dimensional and magnetic parameters of nanoparticle ensembles and for predicting their behaviour under the influence of electromagnetic fields.
Key words: nanoparticles, magnetic moment, distribution function, superparamagnetism, ferromagnetic materials.
URL: https://mfint.imp.kiev.ua/en/abstract/v44/i01/0001.html
DOI: https://doi.org/10.15407/mfint.44.01.0001
PACS: 61.43.Gt, 61.46.-w, 75.30.Cr, 75.40.Cx, 75.75.-c, 81.07.Wx
Citation: V. O. Zamorskyi, S. O. Solopan, A. G. Belous, and A. I. Tovstolytkin, Features of Dispersion of Dimensional and Magnetic Parameters in Spinel Ferrite Nanoparticles, Metallofiz. Noveishie Tekhnol., 44, No. 1: 1—8 (2022) (in Ukrainian)