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Structural and Transport Properties of Doped Bismuth Titanates and Niobates Научная публикация

Журнал Solid State Ionics
ISSN: 0167-2738
Вых. Данные Год: 2018, Том: 315, Страницы: 33-39 Страниц : 7 DOI: 10.1016/j.ssi.2017.12.008
Ключевые слова Bismuth titanates/niobates, Conductivity, Oxygen mobility, Structure
Авторы Sadykov V. A. 1,2 , Koroleva M. S. 3 , Piir I. V. 3 , Chezhina N. V. 4 , Korolev D. A. 4 , Skriabin P. I. 1 , Krasnov A. V. 1 , Sadovskaya E. M. 1,2 , Eremeev N. F. 1 , Nekipelov S. V. 5 , Sivkov V.N. 5
Организации
1 Boreskov Institute of Catalysis SB RAS, pr. Akad. Lavrentieva 5, Novosibirsk, Russian Federation
2 Novosivirsk State University, Pirogova str. 2, Novosibirsk, Russian Federation
3 Institute of Chemistry Komi SC UB RAS, Pervomayskaya St. 48, Syktyvkar, Russian Federation
4 Sankt-Petersburg State University, Universitetskaya nab 7/9, Sankt-Petersburg, Russian Federation
5 Department of Mathematics, Komi SC UB RAS, Chernova St. 3a, Syktyvkar, Russian Federation

Информация о финансировании (2)

1 Российский научный фонд 16-13-00112
2 Российский фонд фундаментальных исследований 15-03-09173

Реферат: Cobalt- or Zn-​doped bismuth titanates and Mg + Cu-​doped bismuth niobate were synthesized by the method of org.-​inorg. precursors combustion. Distribution of dopants over the sites of the pyrochlore structure was elucidated by X-​ray powder diffraction structure refinement and pycnometric d. anal. Zinc and cobalt cations are mainly located in Bi sites appearing also in Ti sites at their high content. Mg cations are located only in Nb sites, while Cu cations are equally distributed between Bi and Nb sites. Magnetic susceptibility data confirm Co2 + state of cobalt atoms revealed by NEXAFS. Antiferromagnetic exchange appears when Co atoms enter the titanium sites. Electronic cond. of p-​type dominates for Co-​doped samples in the 160-​750 °C temp. range. The oxygen mobility and surface reactivity were studied by the oxygen isotope heteroexchange with C18O2 in isothermal and temp.-​programmed modes. Mobility of the lattice oxygen can be described by a homogeneous model. The oxygen mobility and surface reactivity are comparable for doped bismuth titanates and niobates correlating with cond. and being the highest for Co and Cu-​doped samples with disordered distribution of dopants between lattice sites.
Библиографическая ссылка: Sadykov V.A. , Koroleva M.S. , Piir I.V. , Chezhina N.V. , Korolev D.A. , Skriabin P.I. , Krasnov A.V. , Sadovskaya E.M. , Eremeev N.F. , Nekipelov S.V. , Sivkov V.N.
Structural and Transport Properties of Doped Bismuth Titanates and Niobates
Solid State Ionics. 2018. V.315. P.33-39. DOI: 10.1016/j.ssi.2017.12.008 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
Поступила в редакцию: 21 сент. 2017 г.
Принята к публикации: 5 дек. 2017 г.
Опубликована online: 22 дек. 2017 г.
Опубликована в печати: 1 февр. 2018 г.
Идентификаторы БД:
Web of science: WOS:000424181500006
Scopus: 2-s2.0-85037523162
РИНЦ: 35505518
Chemical Abstracts: 2017:1951095
OpenAlex: W2776295881
Цитирование в БД:
БД Цитирований
Web of science 23
Scopus 24
РИНЦ 30
OpenAlex 23
Альметрики: