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Studies of Thermoelectric Properties of Superlattices Based on Manganese Silicide and Germanium

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Abstract

In this paper, we present the results of the study of thermoelectric materials formed by pulsed laser deposition on sapphire substrates and representing thin MnSi1.74 films with intermediate germanium layers. A sharp decrease in the thermal conductivity coefficient of superlattices based on manganese silicides and germanium in comparison with single layers of manganese silicide with an equivalent thickness is shown. This allows significantly increasing the thermoelectric figure of merit. The obtained values of the coefficient of thermoelectric figure of merit are comparable with the known literature values that are typical for similar structures.

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ACKNOWLEDGMENTS

The authors thank A.V. Boryakov for SEM studying the target composition and M.S. Boldin for target sintering experiments.

Funding

This work was supported by the Russian Science Foundation, project no. 17-79-20173.

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Correspondence to M. V. Dorokhin.

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The authors declare that they have no conflicts of interest.

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Translated by A. Ivanov

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Dorokhin, M.V., Kuznetsov, Y.M., Lesnikov, V.P. et al. Studies of Thermoelectric Properties of Superlattices Based on Manganese Silicide and Germanium. Phys. Solid State 61, 2348–2352 (2019). https://doi.org/10.1134/S1063783419120102

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  • DOI: https://doi.org/10.1134/S1063783419120102

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