Abstract
The electrical conductivity of thin polycrystalline VNixO2 films has been studied in a wide range of temperatures, which covers the regions of both metallic and insulator phase. It is shown that the metal–insulator phase transition temperature decreases as the nickel concentration increases, and the temperature range of coexistence of the phases increases monotonically. The temperature dependence of the conductivity of the insulating VNixO2 phase is explained using the hopping conduction model that takes into account the influence of thermal atomic vibrations on the resonance integral. Parameter ε has been calculated as a function of the doping level of VO2.
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This work was supported in part by the scientist program of the Presidium of the Russian Academy of Sciences.
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Translated by Yu. Ryzhkov
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Andreev, V.N., Klimov, V.A. Metal–Insulator Phase Transition in Thin Films of a Nickel-Doped Vanadium Dioxide. Phys. Solid State 61, 1891–1895 (2019). https://doi.org/10.1134/S1063783419100044
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DOI: https://doi.org/10.1134/S1063783419100044