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Registration Number

0224U031400, 0122U000785 , R & D reports

Title

Multicomponent film materials: correlation between electrophysical and magnetoresistive properties and elements concentration

Head

Protsenko Serhii I., Доктор фізико-математичних наук

Registration Date

23-04-2024

Organization

Sumy State University

Description

 During the execution of tasks, the following new scientific results were established that the concept (principle) of the additivity of physical quantities can be applied in the case of the thermal coefficient resistance (TCR), the strain coefficient (SC) and the lattice parameter and Debye temperature. This is explained by the fact that the specified values can be considered the own characteristics of individual components. Thus, for TCR and SC, the relative change in resistance can be considered an intrinsic characteristic, and for the lattice parameter and Debye temperature – the size of atoms or their mass, which will determine the Debye frequency. In all other cases (specific resistance, mean free path of electrons (MFPE), melting temperature), the specified values cannot be considered as their own characteristics, since they are the result of the collective behavior of atoms of multicomponent systems. Approbation of the proposed methodology for calculating physical properties and characteristics (TCR, SC, lattice parameter, Debye temperature) of equiatomic 5-6 component solid solutions (s.s.) based on Fe, Co, Ni, Cu, Cr, Al was carried out . Satisfactory correspondence of the calculated experimental results for film s.s. was obtained in the case of TCR, SC and lattice parameter. For the first time, a measure of the quantitative characteristics of the influence of the concentration of the proppant element on electrophysical quantities and characteristics, integral and differential concentration coefficients, the value and sign of which provide information about the nature of the influence of this or that proppant element, was proposed

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Lobodyuk Olena S.
Odnodvorets Larysa V.
Protsenko Ivan Yu.
Protsenko Serhii I.
Shabelnyk Yurii M.
Shumakova Nataliia I.