Cation ordering and ferroelectric-type phase transitions in new Sr-based whitlockite-related Sr9–xBaxR(VO4)7 (R = In, Yb) vanadates

Gallyamov, E.M.; Stefanovich, S.Y.; Titkov, V.V.; Baryshnikova, O.V.; Mosunov, A.V.; Tsurkov, I.N.; Aksenov, S.M.; Deyneko, D.V.; Morozov, V.A.; Lazoryak, B.I.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 апреля 2026 г.

Авторы: Gallyamov Eldar M., Stefanovich Sergey Yu, Titkov Vladimir V., Baryshnikova Oksana V., Mosunov Alexander V., Tsurkov Ilya N., Aksenov Sergey M., Deyneko Dina V., Morozov Vladimir A., Lazoryak Bogdan I.
Журнал: Ceramics International
Год издания: 2026
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
DOI: 10.1016/j.ceramint.2026.02.144
Аннотация: New solid solutions of Sr9-xBaxIn(VO4)7 (SBIV) and Sr9-xBaxYb(VO4)7 (SBYV) with whitlockite-type structure were obtained by solid-phase synthesis within the ranges of 0 ≤ x ≤ 1.75 and 0 ≤ x ≤ 2, respectively. Incorporation of Ba2+ cations reduces phase transition temperatures from 959 K to 826 K for SBIV, and from 950 K to 800 K for SBYV. All synthesized samples showed nonlinear second harmonic generation (SHG) efficiency 10 times more than that of the quartz standard. SHG response remained largely constant as x increased. Sr2+ cation conductivity is suggested for both SBIV and SBYV. The incorporation of barium cations hinders the migration paths for Sr2+ cation. Barium atoms are located predominantly in the M3 position, which complicates the migration paths for strontium. The key result is creating a model for future finding of Sr-based ion conducting materials.
Добавил в систему: Галлямов Эльдар Маратович

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Cation ordering and ferroelectric-type phase transitions in new Sr-based whitlockite-related Sr9–xBaxR(VO4)7 (R = In, Yb) vanadatesстатья Исследовательская статья

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