|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
New anion-conducting solid solutions Bi1-xTex(O,F)(2+delta) (x > 0.5) and glass-ceramic material on their baseстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Prituzhalov V.A., Ardashnikova E.I., Vinogradov A.A., Dolgikh V.A., Videau J.J., Fargin E., Abakumov A.M., Tarakina N.V., Van Tendeloo G.
- Журнал: Journal of Fluorine Chemistry
- Том: 132
- Номер: 12
- Год издания: 2011
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 1110
- Последняя страница: 1116
- DOI: 10.1016/j.jfluchem.2011.06.042
- Аннотация: The anion-excess fluorite-like solid solutions with general composition Bi1-xTex(O,F)(2+delta), (x > 0.5) have been synthesized by a solid state reaction of TeO2, BiF3 and Bi2O3 at 873 K with following quenching. The homogeneity areas and polymorphism of the I <-> IV Bi1-xTex(O,F)(2+delta) phases were investigated. The crystal structure of the low temperature IV-Bi1-xTex(O,F)(2+delta) phase has been solved using electron diffraction and X-ray powder diffraction (a = 11.53051(9) angstrom, S.G. la-3, R-I = 0.046, R-P = 0.041). Glass formation area in the Bi2O3-BiF3-TeO2 (10% TiO2) system was investigated. IVBi1-xTex(O,F)(2+delta) phase starts to crystallize at short-time (0.5-3 h) annealing of oxyfluoride glasses at temperatures above T-g (600-615 K). The ionic conductivity of the crystalline Bi1-xTex(O,F)(2+delta) phase and corresponding glass-ceramics was investigated. Activation energy of conductivity E-a = 0.41(2) eV for the IV-Bi1-xTex(O,F)(2+delta) crystalline samples and E-a = 0.73 eV for the glass-ceramic samples were obtained. Investigation of the oxyfluoride samples with a constant cation ratio demonstrates essential influence of excess fluorine anions on the ionic conductivity. (C) 2011 Elsevier B.V. All rights reserved.
- Добавил в систему: Долгих Валерий Афанасьевич