Spectroscopic properties of Cr3+ ions in nanocrystalline glass-ceramic composites

Kristina E. Lipinska-Kalita, Patricia E. Kalita, Denise M. Krol, Russell J. Hemley, Cédric L. Gobin, Yoshimichi Ohki

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    9 Citations (Scopus)

    Abstract

    Luminescence properties of Cr3+ ions in a silica-based precursor glass, and in fabricated optically transparent glass-based nanocrystalline composites, have been investigated. The luminescence spectra of the precursor glass revealed a wide range of crystal fields and showed the 4T2-4A2 broadband emission of Cr3+ ions in a weak crystal field, combined with 2E-4A2 emission characteristic for Cr3+ ions in a strong crystal field. Glass-ceramic nanocomposites, with gallium oxide nanocrystals nucleated in a host glass matrix, indicated the prevailing contribution of the crystal-like 2E-4A2 emissions (R-lines) of Cr3+ ions in a strong crystal field. The low-temperature studies demonstrated that the fluorescence of Cr3+ ions could be altered from sharp R-lines of the 2E-4A2 transition, below 70 K, to a combination of R-lines and their sidebands, above 70 K. Our results indicate that, in the developed glass-ceramic nanocomposites, most of the Cr3+ ions have migrated from the host glass matrix to the nucleated gallium oxide nanocrystalline phase.

    Original languageEnglish
    Pages (from-to)524-527
    Number of pages4
    JournalJournal of Non-Crystalline Solids
    Volume352
    Issue number6-7 SPEC. ISS.
    DOIs
    Publication statusPublished - 2006 May 15

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    Keywords

    • Glass-ceramics
    • Luminescence
    • Nanocomposites
    • Nanocrystals
    • Nanoparticles
    • Nucleation
    • Oxide glasses
    • Transition metals
    • X-ray diffraction

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Electronic, Optical and Magnetic Materials

    Cite this

    Lipinska-Kalita, K. E., Kalita, P. E., Krol, D. M., Hemley, R. J., Gobin, C. L., & Ohki, Y. (2006). Spectroscopic properties of Cr3+ ions in nanocrystalline glass-ceramic composites. Journal of Non-Crystalline Solids, 352(6-7 SPEC. ISS.), 524-527. https://doi.org/10.1016/j.jnoncrysol.2005.11.039