Published in Physics of the Solid State
AbstractThe properties of a dilute Ising magnet are studied using a two-dimensional spin–pseudospin model with charged impurities and a frustration caused by the competition of the charge and magnetic orderings. Based on the classical Monte Carlo method, the ground state phase diagram has been obtained and also unusual phase states appeared at fini...
Published in Physics of the Solid State
AbstractThe magnetocaloric effect in a two-dimensional Ising model is considered for different ratios between parameters of inter-site repulsion of nonmagnetic impurities and exchange coupling. Classical Monte Carlo simulations on a square lattice show that in case of weak coupling and at sufficiently high concentrations of nonmagnetic impurities t...
Published in Physics of the Solid State
AbstractThe local structure and charge state of the cobalt impurity in SrTiO3 is studied by X-ray absorption fine structure (XAFS) spectroscopy. The synthesis conditions, under which cobalt predominantly (up to 76%) substitutes the atoms at the A site of the perovskite structure, is found for SrTiO3(Co) samples. By varying the synthesis conditions,...
Published in Physics of the Solid State
A nonequilibrium distribution function in the presence of a heat flux at the interface between two crystals has been investigated in the model of a one-dimensional harmonic chain. Matching conditions of distribution functions for different sides from the interface have been derived. A method for the calculation of the boundary thermal resistance us...
Published in Physics of the Solid State
AbstractThe phase transitions in the homologous series of normal alkanes: hexadecane (C16H34), heptadekane (C17H36), octadekane (C18H38), nonadekane (C19H40), and eicosane (C20H42) have been studied by differential scanning calorimetry. The elimination of methodic errors enables the obtainment of true values of the thermodynamic parameters of these...
Published in Physics of the Solid State
An Erratum to this paper has been published: https://doi.org/10.1134/S1063783421030203
Published in Physics of the Solid State
AbstractSubstitutional solid solutions Mn1 – xFexNiGe (0.05 ≤ x ≤ 1.00) were synthesized. X-ray and neutron diffraction methods were used to study their crystal structure in the temperature range of 20–300 K. A phase transition from the hexagonal structure of the Ni2In type into the orthorhombic structure (space group Pnma) was found at T = 200 K. ...
Published in Physics of the Solid State
AbstractSolid solution YCuxMn1 – xO3 ceramics of with x = 0.05, 0.10, and 0.15 have been produced by the solid-phase reaction method with subsequent sintering by common ceramic technology. The structure, the microstructure, and the dielectric properties of the ceramics have been studied, including the measurements of the temperature–frequency depen...
Published in Physics of the Solid State
AbstractThe physical properties of the NiB4O7 and CoB4O7 tetraborate compounds in three structural modifications with the sp. gr. Pbca, Cmcm, and P6522 have been calculated using the density functional theory in the VASP software package. The pressure dependences of the enthalpy of the compounds in the investigated structural modifications have bee...
Published in Physics of the Solid State
AbstractThe possibility of using implantation of 20-keV He+ ions for modification of the domain structure and magnetic properties of CoPt films (formed by the electron-beam evaporation method) with different cobalt contents (Co0.45Pt0.55 and Co0.35Pt0.65) has been investigated. A decrease in the coercive field (narrowing of the hysteresis loop in t...
