воздействие электромагнитного поля на глинистые минералы;
анализ гравитационных полей от тел сложной формы
Основные публикации:
CHETVERIKOVA A.G., KANYGINA O.N., MAKAROV V.N., BERDINSKIY V.L., SEREGIN M.M., “THERMOSTIMULATED CRYSTAL STRUCTURE TRANSFORMATION OF THE POLYMINERAL CLAY SUBMICRON PARTICLES”, Changes in the structure of phyllosilicate microparticles of submicron fractions of polymineral clay with an average size of 290 nm, as well as changes in the positions of impurity ions of transition metals in the crystal lattice, were studied by X-ray diffraction analysis, Fourier transform infrared spectroscopy, and high-resolution electron paramagnetic resonance spectroscopy. The main composition of microparticles included clinochlore, montmorillonite, calcite, and quartz. Structural transformations were stimulated by heating the samples to 1200 K at a rate of 10 K/min. A decrease in the number of crystal structures of microparticles was recorded due to the amorphization of montmorillonite, the decomposition of calcite, and the formation of sillimanite. Structural rearrangements of crystal cells containing impurity paramagnetic ions Fe³⁺ and Mn²⁺ in submicron particles of clinochlore and montmorillonite, accompanied by displacements and changes in the chemical bonds of these ions, were recorded by the ion-electron paramagnetic resonance method. It is shown that when microparticles were heated to 1200 K, the impurity paramagnetic ions of transition metals did not go beyond their crystal cells., CERAMICA, 68:388 (2022), 441-449
КАНЫГИНА О.Н., БЕРДИНСКИЙ В.Л., ФИЛЯК М.М., ЧЕТВЕРИКОВА А.Г., МАКАРОВ В.Н., ОВЕЧКИН М.В., “ФАЗОВЫЕ ПРЕВРАЩЕНИЯ В ОКСИДАХ ЖЕЛЕЗА ПОД ДЕЙСТВИЕМ МИКРОВОЛНОВОГО ИЗЛУЧЕНИЯ”, Показано, что СВЧ-излучение индуцирует структурные и, как следствие, магнитные фазовые превращения в оксидах железа alpha-Fe–2–O–3–. В результате микроволнового облучения тонкодисперсных частично аморфизированных частиц оксида железа Fe–2–O–3– в течение 10 min во влажной воздушной среде доля кристаллической фазы гематита снижается на 40, ЖУРНАЛ ТЕХНИЧЕСКОЙ ФИЗИКИ, 90:8 (2020), 1311-1317
MAKAROV V.N., KANYGINA O.N., “MODEL OF DESTRUCTION OF MONTMORILLONITE CRYSTAL STRUCTURE IN A MICROWAVE FIELD”, We address amorphization of montmorillonite crystal structure. Powdered montmorillonite samples with an effective particle diameter D≤630μm were treated by microwave field with the frequency 2:45 GHz and power 750 W for ten minutes in different environments. The first sample was treated in an air environment, the second one in a humid environment. The third sample was a ceramic mass with 10, NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 11:2 (2020), 153-160
