Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
In the framework of the phenomenological approach, we obtain an inhomogeneous vortex distribution of magnetization and associated inhomogeneous electric polarization in small magnetic particles. The microscopic mechanism of this connection between magnetization and polarization is due to the Dzyaloshinskii–Moriya interaction. Expressions of magneti...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
In the present work the features of the formation of interference deformation bands on uniformly curved crystals are investigated by the methods of section topography and numerical modeling in the Bragg geometry. The role of interbranch scattering in the formation of deformation bands (bending contours) in a curved lattice is investigated. It is es...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
AbstractThe results of the reinforcement of the Al + 12% Si aluminum alloy with ligatures, containing nanoparticles of Si3N4 powder, obtained by the azide technology of self-propagating high-temperature synthesis (SHS) at SamSTU, are presented. The introduction of powder ligatures, containing from 2.5 to 7.5 wt % Si3N4, into the aluminum melt was s...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
AbstractThe structural features and valence states of Fe in substituted strontium ferrite Sr2LaFe3O9–δ after a series of annealing events in vacuum at different temperatures from 400°C to 650°C are studied by X-ray diffraction (XRD) and Mӧssbauer spectroscopy. According to X-ray data, the two samples with extreme (in terms of oxygen content) compos...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
AbstractThe relationship between the edge effect and phenomenon of the focusing of X-rays in an interferometric two-block system with flat plates is studied. It is theoretically justified and experimentally shown that the edge effect makes a significant contribution to the formation of a focal spot at the output of the interferometer. It is experim...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
The effect of time-temperature treatment of Al–Mg–Si melts on the tribological behavior of in-situ cast aluminum matrix composites Al–Mg2Si and the structural and morphological parameters of the friction surfaces is studied. It is shown that the time-temperature treatment of melts in rational modes leads to the refinement of inclusions of the endog...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
AbstractThe phase composition, microstructure, mechanical properties and stability of foils of (Sn4In)100–хBix (х = 0–8 at %) alloys synthesized by the method of ultrafast quenching from the melt at cooling rates up to 105 K/s are studied. Rapidly hardened foils of (In4Sn)100–хBix alloys at a bismuth concentration of less than 4 at % consist of sol...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
AbstractIn this paper, we measure the nanohardness (H) and Young’s modulus (E) of three alloys: Ti–2.5 wt % Ni, Ti–2 wt % Cr, and Ti–2.2 wt % Fe preliminarily annealed in the two-phase region of the phase diagram (αTi + intermetallic compound) and then subjected to high-pressure torsion. The titanium alloy with the nickel addition showed the highes...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
Knowing the distribution of the impurity concentration in the surface layers of solids is of great importance in technologies for modifying materials by methods of surface treatment. For these purposes, it is promising to use secondary-ion mass spectrometry. Due to the fact that the depths of the surface layers analyzed by this method do not exceed...
Published in Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
For the first time, studies of the evolution of the morphology of polyaniline (PANI) particles on the surface of silicon (111) and sapphire (0001) in ultra-high vacuum are conducted. It is established by microscopy methods that exposure to ultra-high vacuum leads to the melting of particles with their simultaneous orientation relative to the substr...
