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Synthesis and properties of oxide ion conductor Pr2Mo2O9 with La2Mo2O9 structureстатья
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: Voronkova V.I., Kharitonova E.P., Orlova E.I., Kolesnikova D.S.
- Журнал: Crystallography Reports
- Том: 56
- Номер: 6
- Год издания: 2011
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1066
- Последняя страница: 1069
- DOI: 10.1134/S1063774511060277
- Аннотация: Polycrystalline Pr2Mo2O9 samples have been prepared by solid-state synthesis and single crystals of this compound have been grown. Pr2Mo2O9 is unstable in the temperature range 700-900 C and partially decomposes with the formation of Pr2Mo3O12 at these temperatures, but upon further heating to 1000-1050 C, Pr2Mo2O9 is recovered. At room temperature, the structure, polymorphism, and physical properties of Pr2Mo2O9 are similar to those of the known oxide ion conductor La2Mo2O9. Pr2Mo2O9 exhibits a reversible first-order phase transition to the cubic phase in the temperature range 520-540 C. The electric conductivity of Pr2Mo2O9 is close to that of La2Mo2O9 and amounts to 3.5 x 10^(-2) S/cm at 700 C. The conductivity of Pr2Mo2O9 is described by the Arrhenius law in the low-temperature phase and by the Vogel-Fulcher-Tammann equation in the high-temperature phase.
- Добавил в систему: Харитонова Елена Петровна