Application of Some Techniques Using Synchrotron Radiation to the Study of Promising SrTiO3–TiO2 Composite Thermoelectric Ceramics | Sciact - CRIS-система Института катализа

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

Журнал

Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques
ISSN: 1027-4510 , E-ISSN: 1819-7094

Вых. Данные

Год: 2023, Том: 17, Номер: 3, Страницы: 647–651 Страниц : 5 DOI: 10.1134/s1027451023030357

Ключевые слова

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

Авторы

Zavjalov A.P. ^1,2 , Lyubas G.A. ² , Sharafutdinov M.R. ^2,3 , Kriventsov V.V. ⁴ , Kosyanov D.Yu. ¹

Организации

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

Информация о финансировании (4)

1	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FWUS-2021-0004
2	Совет по грантам Президента Российской Федерации	СП-3221.2022.1
3	Российский фонд фундаментальных исследований	18-29-11044 (АААА-А18-118080290002-5)
4	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	ГЗ-2021-2023

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.

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 CAPlus OpenAlex СКИФ ID

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 СКИФ ID

Поступила в редакцию:	5 окт. 2022 г.
Принята к публикации:	22 дек. 2022 г.
Опубликована в печати:	16 июн. 2023 г.
Опубликована online:	16 июн. 2023 г.

Web of science:	WOS:001009238900017
Scopus:	2-s2.0-85161987063
РИНЦ:	54088986
Chemical Abstracts:	2023:1257154
OpenAlex:	W4380884478
СКИФ ID:	1614

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