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Current issue   Ukr. J. Phys. 2017, Vol. 62, N 2, p.132-139
https://doi.org/10.15407/ujpe62.02.0132    Paper

Hovorun T.P.1, Bilous O.A.1, Gaponova O.P.1, Dekhtyaruk L.V.2, Chornous A.M.1

1 Sumy State University
(2, Rymskyi-Korsakov Str., Sumy 40007, Ukraine; e-mail: yushchenko@phe.sumdu.edu.ua)
2 Kharkiv National University of Construction and Architecture
(40, Sums’ka Str., Kharkiv 61002, Ukraine)

Research of Conductivity in Polycrystalline Films with a Thin Coating Using the Modified Mayadas–Shatzkes Model

Section: Solid Matter
Original Author's Text: Ukrainian

Abstract: The experimental testing of the theoretical concepts of a modifed Mayadas–Shatzkes model for the conductivity in thin polycrystalline flms with a thin coating has been carried out. It is shown that the deposition of Ni coatings onto Co flms increases the specifc conductance in bilayer samples with respect to the conductivity in the basic (uncovered) specimen. At the same time, the coating of the Ni flms with Cu and of the Cu flms with Ni leads to a decrease of the flm conductivity. This phenomenon takes place due to the enhancement or worsening of the grain boundary transparency when the coating is deposited.

Key words: Mayadas–Shatzkes model, polycrystalline flm, coating, difusion, conductivity.