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Thermoelectric and electrical characteristics of SmS ceramic samples after exposure to a pulsed magnetic field by Ivan Volchkov; Evgeniy Baskakov; Vladimir Strelov; Vladimir Kanevskii is a Materials Science article available to read on EtoBox.

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Samarium monosulfide (SmS) is a promising material for creating thermoelectric generators (TEG), gas sensors and strain gauges. Despite the high values of the generated thermo electromotive force (TEMF) (α ≈ 170–350 μV/K), methods for increasing the efficiency of TEGs based on SmS are of considerable interest. One of these methods can be short-term effects of magnetic fields, including pulsed ones, on these materials. The action of a pulsed magnetic field (PMF) leading to an increase in TEMF (U T) of SmS ceramic samples is found. Samples that are not subjected to high frequency currents (HFC) annealing show an increase in U T of 44.54%–62.18% (from 11.9 to 17.2–19.3 mV). The conductivity (σ) of the samples is ∼ 22 Ω−1/cm and is insensitive to short-term exposure to a PMF. Samples that undergo HFC annealing show an increase in U T of 23.47%–41.31% (from 21.3 to 26.3–30.1 mV) after exposure to a PMF. The conductivity of the samples is ∼ 15 Ω−1/cm and after a short exposure to the PMF is changing non-monotonically, with an increase in the overall instability. The difference in the values of U T and σ can be explained by presence of an ordered grain structure and a significant amount o

Who reads Thermoelectric and electrical characteristics of SmS ceramic samples after exposure to a pulsed magnetic field?

Author

Ivan Volchkov; Evgeniy Baskakov; Vladimir Strelov; Vladimir Kanevskii

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Materials Science (Physical Sciences)