Structure and Photochromism of Al-Cd-O-F Glasses

Fu Jie, Akiyoshi Osaka, Yoshinari Miura, Jun Takada, Tokuro Nanba

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

New photochromic glasses in the system Al-Cd-O-F were obtained. When this type ot glass was irradiated by darkening UV light having the wavelength near the absorption edge, a new absorption was induced almost over the whole visible region. The photo-induced absorption decayed very slowly accompanying luminescence, and its half fading time was remarkably shortened by heating. Infrared and 27Al MAS-NMR spectra indicated that both AlX4 tetrahedra and AlX6 pctahedra (X=O, F) were present and the fraction of octahedra increased with the increasing fluorine content. On the basis of both the ESR spectra and the glass structure model, the color centers were proposed to be oxygen hole centers.

Original languageEnglish
Pages (from-to)578-582
Number of pages5
JournalJournal of the Society of Materials Science, Japan
Volume41
Issue number464
DOIs
Publication statusPublished - 1992

Keywords

  • Al MAS-NMR spectra
  • Al-Cd-O-F
  • ESR spectra
  • Glass
  • Photochromism
  • Structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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