Search academic texts

Information × Registration Number 0223U001923, 0122U000785 , R & D reports Title Multicomponent film materials: correlation between electrophysical and magnetoresistive properties and elements concentration popup.stage_title Head Protsenko Serhii I., Доктор фізико-математичних наук Registration Date 06-02-2023 Organization Sumy State University popup.description2  The results of the physical properties investigation of four- and five-component high-entropy alloys (HEA) are presented. The film samples were formed according to the own methodology of the Department of Electronic, General and Applied Physics (Sumy State University) authors. The layer-by-layer condensation of individual components with subsequent heat treatment or by simultaneous condensation of film alloy components was used. Based on the concept of additivity of the physical values of wind turbines, calculations were made of the concentration dependence on electrophysical values (specific resistance, thermal coefficient of resistance, strain sensitivity); magnetoresistive (magnetoresistance with giant signs); dynamic characteristics (Debye temperature, lattice parameter); some electronic and magnetic characteristics. The calculated results are verified experimentally on the example of electrophysical and magnetoresistive properties. It is noted that in this case there is a good agreement between experimental and calculated results. The obtained concentration dependences of physical quantities make it possible to conclude that individual atoms of specific resistance and strain sensitivity are more sensitive to the concentration and less sensitive to magnetoresistive properties, Debye temperature, Fermi energy, HEA lattice parameter, and melting temperature. In the case of such properties as Fermi energy, Fermi temperature, lattice parameter, Debye temperature, etc. calculation studies were carried out, which allow us to talk about their relatively low sensitivity to the concentration of individual elements. It is clear that this will be observed only in the case of single-phase (solid solutions) phase composition. If magnetic quasi-granules or crystallites of magnetic intermetallics are formed in the process of formation of HEA, then concentration dependences will be complicated Product Description popup.authors Odnodvorets Larisa V. Protsenko Ivan Yu. Protsenko Serhii I. Stepanenko Andrii O. Shabelnyk Yurii M. Shpetnyi Ihor O. Shumakova Nataliya I. popup.nrat_date 2023-02-06 Close