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Monoclinic zinc monotungstate Yb3+,Li+:ZnWO4: Part I. Czochralski growth, structure refinement and Raman spectraстатья
Статья опубликована в высокорейтинговом журнале
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: 4 февраля 2021 г.
- Авторы: Subbotin Kirill, Loiko Pavel, Slimi Sami, Volokitina Anna, Titov Anatoly, Lis Denis, Chernova Elena, Kuznetsov Sergei, Solé Rosa Maria, Griebner Uwe, Petrov Valentin, Aguiló Magdalena, Díaz Francesc, Camy Patrice, Zharikov Evgenii, Mateos Xavier
- Журнал: Journal of Luminescence
- Том: 228
- Год издания: 2020
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 117601
- DOI: 10.1016/j.jlumin.2020.117601
- Аннотация: We report on the growth of a co-doped divalent-metal monotungstate crystal, Yb3+,Li+:ZnWO4, its structurerefinement, thermo-mechanical properties and polarized Raman spectra. Yb3+,Li+:ZnWO4 crystals are grown bythe Czochralski method using Pt/Rh and Pt crucibles. The nature of crystal coloration is discussed and assigned tocolor centers based on oxygen vacancies as well as Fe2+(Fe3+) species and, possibly, other uncontrolled impuritiesof transition metal ions. Oxidizing annealing at 800 ◦C helps to improve the transparency of Yb3+,Li+:ZnWO4 leading to a weak residual pink coloration. Yb3+,Li+:ZnWO4 was confirmed to be monoclinic (sp. gr. P2/c– C42h, No. 13) with lattice constants a = 4.702(2) Å, b = 5.718(6) Å, c = 4.930(4) Å and β = 90.713(5)◦. Thecoefficients of linear thermal expansion are α[100] = 11.71, α[010] = 9.90 and α[001] = 7.01 [10 6 K 1]. Themelting point of the crystal is at 1166 ◦C and no thermal effects are found below the melting point. The Yb3+,Li+:ZnWO4 crystal shows intense and strongly polarized Raman spectra with the most intense mode at 906.0 cm 1assigned to the W – O stretching vibrations in the [WO6] octahedra. It is thus a promising gain medium for laseremission at ~1 μm and for self-Raman frequency conversion.
- Добавил в систему: Титов Анатолий Игоревич