Improving of thermoelectric figure of merit in Sr0.925Dy0.075TiO3 ceramics : научное издание

Dudnikov V.A.; Orlov Yu.S.; Vereshchagin S.N.; Belov A.A.; Solovyov L.A.; Borus A.A.; Zharkov S.M.; Zeer G.M.; Ustyuzhanin Yu.N.; Volochaev M.N.; Bondarev V.S.; Ovchinnikov S.G.

Дополнительные ссылки: eLibrary

База данных: Каталог библиотеки СФУ

Библиографическое описание: Improving of thermoelectric figure of merit in Sr0.925Dy0.075TiO3 ceramics : научное издание / V. A. Dudnikov [et al.]. - Текст : непосредственный // Ceramics International. - 2024. - Т. 50, №24 Part C. - P. 55026-55033. - The work was carried out within the state assignment of the Kirensky Institute of Physics SB RAS. - ISSN 0272-8842. - ISSN 1873-3956, DOI 10.1016/j.ceramint.2024.10.351.

Аннотация: Rare earth doped SrTiO3 is one of the most promising oxide materials meeting the safety and stability requirements for potential applications in thermoelectric converters. This work aims to assess the feasibility of engineering SrTiO3-based materials to improve their thermoelectric performance. A comparative analysis of the thermoelectric properties of Sr0.925Dy0.075TiO3 ceramic samples obtained from preliminarily mechanically activated Sr0.925Dy0.075TiO3 nano-powder by two methods – solid-state reaction synthesis and spark plasma sintering – was carried out. Significant differences in the morphology of the samples lead to significant differences in the temperature dependences of electrical resistivity and the Seebeck coefficient. Ceramics obtained by solid-state reaction synthesis exhibit lower porosity and lower electrical resistivity. The thermoelectric power factor of such ceramics is 2–3 times higher than that of samples obtained by spark plasma sintering. The obtained value of thermoelectric figure of merit ZT = 0.41 at T = 673 K for Sr0.925Dy0.075TiO3 is the highest value among n-type oxide thermoelectric ceramics at a given temperature and maintains a tendency to increase with increasing temperature.

Год издания: 2024

Авторы: Dudnikov V.A. , Orlov Yu.S. , Vereshchagin S.N. , Belov A.A. , Solovyov L.A. , Borus A.A. , Zharkov S.M. , Zeer G.M. , Ustyuzhanin Yu.N. , Volochaev M.N. , Bondarev V.S. , Ovchinnikov S.G.

Издательство: Elsevier Science Publishing Company, Inc.

Источник: Ceramics International

Выпуск: Т. 50, №24 Part C

Номера страниц: 55026-55033

Держатель оригинала документа: Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Russian Academy of Sciences, Institute of High Technology and Advanced Materials, Far Eastern Federal University, Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Siberian Federal University

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Improving of thermoelectric figure of merit in Sr0.925Dy0.075TiO3 ceramics : научное издание
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