Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Magnetic granulometry, frequency-dependent susceptibility and magnetic states of particles of magnetite ore from the Kovdor deposit. / Kharitonskii, Petr; Bobrov, Nikita; Gareev, Kamil; Kosterov, Andrei; Nikitin, Andrey; Ralin, Andrey; Sergienko, Elena; Testov, Oleg; Ustinov, Alexander; Zolotov, Nikita.
в: Journal of Magnetism and Magnetic Materials, Том 553, 169279, 01.07.2022, стр. 169279.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Magnetic granulometry, frequency-dependent susceptibility and magnetic states of particles of magnetite ore from the Kovdor deposit
AU - Kharitonskii, Petr
AU - Bobrov, Nikita
AU - Gareev, Kamil
AU - Kosterov, Andrei
AU - Nikitin, Andrey
AU - Ralin, Andrey
AU - Sergienko, Elena
AU - Testov, Oleg
AU - Ustinov, Alexander
AU - Zolotov, Nikita
N1 - Publisher Copyright: © 2022 Elsevier B.V.
PY - 2022/7/1
Y1 - 2022/7/1
N2 - Structural, frequency and magnetic properties of magnetite ores from the Kovdor deposit, Northwest Russia, have been investigated. Scanning electron microscopy, X-ray energy dispersion microanalysis, X-ray diffraction, and Curie temperature measurements all point to non-stoichiometric magnetite as a major (ca 48 wt%) magnetic constituent of the ore. Magnetic granulometry of the samples has been analyzed using the model of interacting ferrimagnetic particles. The results of determining superparamagnetic particles on the basis of theoretical modeling are in good agreement with the experimental data obtained using the frequency-dependent susceptibility and granulometry methods. It is shown that even relatively minor concentrations of superparamagnetic grains modify the electromagnetic response of the samples, and can be detected in their impulse transient characteristics.
AB - Structural, frequency and magnetic properties of magnetite ores from the Kovdor deposit, Northwest Russia, have been investigated. Scanning electron microscopy, X-ray energy dispersion microanalysis, X-ray diffraction, and Curie temperature measurements all point to non-stoichiometric magnetite as a major (ca 48 wt%) magnetic constituent of the ore. Magnetic granulometry of the samples has been analyzed using the model of interacting ferrimagnetic particles. The results of determining superparamagnetic particles on the basis of theoretical modeling are in good agreement with the experimental data obtained using the frequency-dependent susceptibility and granulometry methods. It is shown that even relatively minor concentrations of superparamagnetic grains modify the electromagnetic response of the samples, and can be detected in their impulse transient characteristics.
KW - Frequency-dependent susceptibility
KW - Magnetic granulometry
KW - Magnetic states
KW - Magnetite ore
KW - Magnetostatic interaction
KW - Superparamagnetic particles
UR - http://www.scopus.com/inward/record.url?scp=85126618291&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2022.169279
DO - 10.1016/j.jmmm.2022.169279
M3 - Article
VL - 553
SP - 169279
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
M1 - 169279
ER -
ID: 93717339