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

Research output: Contribution to journalArticle

10 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

Keywords

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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  • 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