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Application of Some Techniques Using Synchrotron Radiation to the Study of Promising SrTiO3–TiO2 Composite Thermoelectric Ceramics Full article

Journal Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques
ISSN: 1027-4510 , E-ISSN: 1819-7094
Output data Year: 2023, Volume: 17, Number: 3, Pages: 647–651 Pages count : 5 DOI: 10.1134/s1027451023030357
Tags SrTiO3–TiO2, composite ceramics, reactive spark plasma sintering, synchrotron radiation, X-ray diffraction, in-situ heating XRD, X-ray luminescence, near edge X-ray absorption fine structure, XANES, two-dimensional electron gas
Authors Zavjalov A.P. 1,2 , Lyubas G.A. 2 , Sharafutdinov M.R. 2,3 , Kriventsov V.V. 4 , Kosyanov D.Yu. 1
Affiliations
1 SEC Advanced Ceramic Materials, Far Eastern Federal University, Vladivostok, 690922 Russia
2 Institute of Solid-State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630128 Russia
3 Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Kol’tsovo, 630559 Russia
4 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia

Funding (4)

1 Ministry of Science and Higher Education of the Russian Federation FWUS-2021-0004
2 Council for Grants of the President of the Russian Federation СП-3221.2022.1
3 Russian Foundation for Basic Research 18-29-11044 (АААА-А18-118080290002-5)
4 Ministry of Science and Higher Education of the Russian Federation ГЗ-2021-2023

Abstract: The paper presents the results of studies of SrTiO3–TiO2 biphase ceramics, which was previously proposed as a promising n-type thermoelectric material, carried out using synchrotron radiation techniques at the research equipment of the Shared Research Center “Siberian Synchrotron and Terahertz Radiation Center”. In particular, the in-situ heating X-ray diffraction method demonstrated that the reaction between the powder components SrCO3 (strontianite) and TiO2 (anatase) to produce SrTiO3 (tausonite) was not the driving force in producing ceramics by spark plasma sintering of the reaction mixture. For two spectral methods, X‑ray luminescence and XANES spectroscopy, the spectrum of biphase ceramics was compared with the model spectrum obtained from the spectra of monophase ceramics as comparison samples. The method of X-ray luminescence revealed a shift to the high-energy region and a narrowing of the spectrum of biphase ceramics, which may indicate dimensional quantization (the presence of two-dimensional electron gas) in the system. The XANES spectrum of biphase ceramics reveals changes in the region in which its shape may significantly depend on the symmetry of the nearest Ti4+ atoms. However, it is difficult to interpret these data without numerical simulation.
Cite: Zavjalov A.P. , Lyubas G.A. , Sharafutdinov M.R. , Kriventsov V.V. , Kosyanov D.Y.
Application of Some Techniques Using Synchrotron Radiation to the Study of Promising SrTiO3–TiO2 Composite Thermoelectric Ceramics
Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2023. V.17. N3. P.647–651. DOI: 10.1134/s1027451023030357 WOS Scopus РИНЦ AN OpenAlex
Original: Завьялов А.П. , Любас Г.А. , Шарафутдинов М.Р. , Кривенцов В.В. , Косьянов Д.Ю.
Приложение некоторых методик с использованием синхротронного излучения к изучению перспективного композитного термоэлектрика SrTiO3–TiO2
Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2023. №6. С.21-26. DOI: 10.31857/S1028096023060183 РИНЦ OpenAlex
Dates:
Submitted: Oct 5, 2022
Accepted: Dec 22, 2022
Published print: Jun 16, 2023
Published online: Jun 16, 2023
Identifiers:
Web of science: WOS:001009238900017
Scopus: 2-s2.0-85161987063
Elibrary: 54088986
Chemical Abstracts: 2023:1257154
OpenAlex: W4380884478
Citing: Пока нет цитирований
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