Artificial glasses containing nanoscale inclusions of iron oxides, including magnetite and
hematite, were obtained via the method of the high-temperature melting of rocks. The main factors
influencing the magnetic properties of glasses are the composition of the initial charge and the conditions
of cooling of the melt. The data of magnetic granulometry and frequency-field dependencies of
magnetic susceptibility showed the presence of a sufficiently large superparamagnetic fraction in
the samples. Coordinated theoretical modeling using two independent models that take into consideration
possible the chemical inhomogeneity of particles and magnetostatic interaction between
them made it possible to calculate hysteresis characteristics corresponding to the experiment and to
estimate ferrimagnetic concentrations in the samples, including the superparamagnetic fraction.
Original languageEnglish
Article number220
Number of pages22
Issue number10
StatePublished - 8 Oct 2023

    Research areas

  • artificial glasses, hematite, magnetite, magnetometry, magnetostatic interaction, micromagnetic modeling, nanoparticles, rocks, superparamagnetism, two-phase particles

ID: 111243507