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

*この研究の対応する著者

研究成果: Article査読

11 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)524-527
ページ数4
ジャーナルJournal of Non-Crystalline Solids
352
6-7 SPEC. ISS.
DOI
出版ステータスPublished - 2006 5月 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • 凝縮系物理学
  • 材料化学

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