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Growth and investigation of mixed magnesium-zinc tungstate ZnxMg1-xWO4 single crystalsстатья
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: 15 апреля 2026 г.
- Авторы: Zimina Y.I., Subbotin K.A., Titov A.I., Lis D.A., Ishakova L.D., Agakhanova V.A., Voronov V.V., Popov P.A., Pavlov S.K., Didenko Y.S., Zharikov E.V.
- Журнал: Journal of Crystal Growth
- Том: 686
- Год издания: 2026
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 128598
- DOI: 10.1016/j.jcrysgro.2026.128598
- Аннотация: A series of mixed magnesium–zinc tungstate single crystals, ZnxMg1-xWO4 (x = 0; 0.1; 0.15; 0.2; 0.3; 0.5; 0.7; 1), was grown. The least Zn2+ content (x) allowing the Czochralski growth of high optical quality ZnxMg1-xWO4 crystals was revealed. Using energy-dispersive microprobe analysis, the actual cations distribution along the crystal boules length has been measured and segregation coefficients of the cations between the crystals and the melts have been calculated. The parameters of the monoclinic unit cell were refined, and the hydrostatic densities of the crystals were measured. The obtained results on the unit cell parameters and on the hydrostatic densities made it possible to calculate the actual molar weights of the crystals, which appeared to be very close to the molar weights of the same samples calculated from the measured cation compositions. It indicates about high correctness of determination the actual crystals compositions. It was shown that ZnxMg1-xWO4 crystals with nominal x values of 0.5 and 0.7 contain the pronounced amount of vacancies in (Mg2+ + Zn2+) sites and the corresponding amount of oxygen vacancies. The values of thermal conductivity of the crystals along three principal directions were measured using the steady-state heat flow method. It was shown that substitution 20 at.% of magnesium with zinc leads to a sharp decrease in thermal conductivity compared to MgWO4, and reaches the level of thermal conductivities of ZnWO4. The mechanical strength characteristics (microhardness and fracture toughness) of the crystals were measured by the indentation method.
- Добавил в систему: Зимина Юлия Игроевна