Fabrication and Thermoelectric Properties of SrTiO3–TiO2 Composite Ceramics | Sciact - CRIS-system of Boreskov Institute of Catalysis

Fabrication and Thermoelectric Properties of SrTiO3–TiO2 Composite Ceramics Full article

Journal

Ceramics International
ISSN: 0272-8842

Output data

Year: 2022, Volume: 48, Number: 24, Pages: 36500-36514 Pages count : 15 DOI: 10.1016/j.ceramint.2022.08.210

Tags

Composites; BaTiO3 and titanates; TiO2; Thermoelectric performance

Authors

Zavjalov A.P. ^1,2 , Lyubas G.A. ² , Sharafutdinov M.R. ^2,3 , Tarasov I.A. ⁴ , Belov A.A. ⁵ , Shichalin O.O. ⁵ , Papynov E.K. ⁵ , Kriventsov V.V. ⁶ , Kosyanov D.Y. ^1,7

Affiliations

1	SEC “Advanced Ceramic Materials”, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok, 690922, Russian Federation
2	Institute of Solid-State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, 18 Kutateladze Street, Novosibirsk, 630128, Russian Federation
3	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 1 Nikol'skiy Prospekt, Kol'tsovo, 630559, Russian Federation
4	Laboratory of Physics of Magnetic Phenomena, L.V. Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 50 Akademgorodok Street, Krasnoyarsk, 660036, Russian Federation
5	Laboratory of Nuclear Technology, Department of Nuclear Technology, Institute of Science-Intensive Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok, 690922, Russian Federation
6	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 5 Acad. Lavrentiev Avenue, Novosibirsk, 630090, Russian Federation
7	Institute for Automation and Control Processes, Far Eastern Branch, Russian Academy of Sciences, 5 Radio Street, Vladivostok, 690041, Russian Federation

Funding (4)

1	Russian Foundation for Basic Research	18-29-11044 (АААА-А18-118080290002-5)
2	Ministry of Science and Higher Education of the Russian Federation	FWUS-2021-0004
3	Council for Grants of the President of the Russian Federation	СП-3221.2022.1
4	Ministry of Science and Higher Education of the Russian Federation	00657-2020-0006

The paper presents the results of preparing biphase SrTiO3–TiO2 ceramics as a promising system for n-type thermoelectrics using the features of a two-dimensional electron gas. Ceramics was obtained by reactive spark plasma sintering of SrCO3 and TiO2. The dynamics of phase transformations are shown; it is clarified that phase transformations are not the driving force of sintering. The mutual stabilization of the SrTiO3 and TiO2 phases is shown. Unique data on the assessment of the temperature gradient in the system have been obtained. A comparison of the thermoelectric characteristics of biphasic ceramics and its constituent phases allows concluding that the role of the two-dimensional electron gas is reduced to modulating the properties of bulk phases. Clear signs of size quantization were detected by the X-ray luminescence method, which is expressed in the blueshift of the luminescence spectrum by 22.3 ± 0.8 meV. © 2022 Elsevier Ltd and Techna Group S.r.l.

Zavjalov A.P. , Lyubas G.A. , Sharafutdinov M.R. , Tarasov I.A. , Belov A.A. , Shichalin O.O. , Papynov E.K. , Kriventsov V.V. , Kosyanov D.Y.
Fabrication and Thermoelectric Properties of SrTiO3–TiO2 Composite Ceramics
Ceramics International. 2022. V.48. N24. P.36500-36514. DOI: 10.1016/j.ceramint.2022.08.210 WOS Scopus РИНЦ AN OpenAlex publication_identifier_short.sciact_skif_identifier_type

Submitted:	May 31, 2022
Accepted:	Aug 19, 2022
Published online:	Aug 31, 2022
Published print:	Dec 15, 2022

Web of science:	WOS:000896645900002
Scopus:	2-s2.0-85138587682
Elibrary:	53768800
Chemical Abstracts:	2022:2435959
OpenAlex:	W4293833977
publication_identifier.sciact_skif_identifier_type:	1612

DB	Citing
Scopus	5
Web of science	5
Elibrary	4
OpenAlex	6