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Monoclinic zinc monotungstate Yb3+,Li+:ZnWO4: Part I. Czochralski growth, structure refinement and Raman spectra

  • Datos identificativos

    Identificador: imarina:8263149
    Autores:
    Subbotin, KirillLoiko, PavelSlimi, SamiVolokitina, AnnaTitov, AnatolyLis, DenisChernova, ElenaKuznetsov, SergeiSole, Rosa MariaGriebner, UwePetrov, ValentinAguilo, MagdalenaDiaz, FrancescCamy, PatriceZharikov, EvgeniiMateos, Xavier
    Resumen:
    © 2020 Elsevier B.V. We report on the growth of a co-doped divalent-metal monotungstate crystal, Yb3+,Li+:ZnWO4, its structure refinement, thermo-mechanical properties and polarized Raman spectra. Yb3+,Li+:ZnWO4 crystals are grown by the Czochralski method using Pt/Rh and Pt crucibles. The nature of crystal coloration is discussed and assigned to color centers based on oxygen vacancies as well as Fe2+(Fe3+) species and, possibly, other uncontrolled impurities of 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)°. The coefficients of linear thermal expansion are α[100] = 11.71, α[010] = 9.90 and α[001] = 7.01 [10−6 K−1]. The melting 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−1 assigned to the W – O stretching vibrations in the [WO6] octahedra. It is thus a promising gain medium for laser emission at ~1 μm and for self-Raman frequency conversion.
  • Otros:

    Autor según el artículo: Subbotin, Kirill; Loiko, Pavel; Slimi, Sami; Volokitina, Anna; Titov, Anatoly; Lis, Denis; Chernova, Elena; Kuznetsov, Sergei; Sole, Rosa Maria; Griebner, Uwe; Petrov, Valentin; Aguilo, Magdalena; Diaz, Francesc; Camy, Patrice; Zharikov, Evgenii; Mateos, Xavier
    Departamento: Química Física i Inorgànica
    Autor/es de la URV: Aguiló Díaz, Magdalena / Díaz González, Francisco Manuel / Mateos Ferré, Xavier / Slimi, Sami / Solé Cartañà, Rosa Maria / Volokitina, Anna
    Palabras clave: Znwo4 crystal scintillators Ytterbium lasers Tungstate crystals Stimulated raman scattering Spectroscopic properties Single-crystals Optical-properties Operation Laser performance Impurities Fe Czochralski method Crystal structure Coloration Charge-compensation Cdwo4
    Resumen: © 2020 Elsevier B.V. We report on the growth of a co-doped divalent-metal monotungstate crystal, Yb3+,Li+:ZnWO4, its structure refinement, thermo-mechanical properties and polarized Raman spectra. Yb3+,Li+:ZnWO4 crystals are grown by the Czochralski method using Pt/Rh and Pt crucibles. The nature of crystal coloration is discussed and assigned to color centers based on oxygen vacancies as well as Fe2+(Fe3+) species and, possibly, other uncontrolled impurities of 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)°. The coefficients of linear thermal expansion are α[100] = 11.71, α[010] = 9.90 and α[001] = 7.01 [10−6 K−1]. The melting 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−1 assigned to the W – O stretching vibrations in the [WO6] octahedra. It is thus a promising gain medium for laser emission at ~1 μm and for self-Raman frequency conversion.
    Áreas temáticas: Química Optics Odontología Medicina ii Medicina i Materiais Interdisciplinar General chemistry Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Condensed matter physics Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciência de alimentos Chemistry (miscellaneous) Chemistry (all) Biotecnología Biophysics Biochemistry Atomic and molecular physics, and optics Astronomia / física
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 00222313
    Direcció de correo del autor: anna.volokitina@estudiants.urv.cat sami.slimi@estudiants.urv.cat sami.slimi@estudiants.urv.cat magdalena.aguilo@urv.cat rosam.sole@urv.cat xavier.mateos@urv.cat f.diaz@urv.cat
    Identificador del autor: 0000-0002-6091-6534 0000-0001-6130-9579 0000-0002-5769-4141 0000-0003-1940-1990 0000-0003-4581-4967
    Fecha de alta del registro: 2024-10-19
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S0022231320312369
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Journal Of Luminescence. 228 (117601): 117601-
    Referencia de l'ítem segons les normes APA: Subbotin, Kirill; Loiko, Pavel; Slimi, Sami; Volokitina, Anna; Titov, Anatoly; Lis, Denis; Chernova, Elena; Kuznetsov, Sergei; Sole, Rosa Maria; Grieb (2020). Monoclinic zinc monotungstate Yb3+,Li+:ZnWO4: Part I. Czochralski growth, structure refinement and Raman spectra. Journal Of Luminescence, 228(117601), 117601-. DOI: 10.1016/j.jlumin.2020.117601
    DOI del artículo: 10.1016/j.jlumin.2020.117601
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2020
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Atomic and Molecular Physics, and Optics,Biochemistry,Biophysics,Chemistry (Miscellaneous),Condensed Matter Physics,Optics
    Znwo4 crystal scintillators
    Ytterbium lasers
    Tungstate crystals
    Stimulated raman scattering
    Spectroscopic properties
    Single-crystals
    Optical-properties
    Operation
    Laser performance
    Impurities
    Fe
    Czochralski method
    Crystal structure
    Coloration
    Charge-compensation
    Cdwo4
    Química
    Optics
    Odontología
    Medicina ii
    Medicina i
    Materiais
    Interdisciplinar
    General chemistry
    Farmacia
    Ensino
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Condensed matter physics
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciência de alimentos
    Chemistry (miscellaneous)
    Chemistry (all)
    Biotecnología
    Biophysics
    Biochemistry
    Atomic and molecular physics, and optics
    Astronomia / física
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