Accession Number : ADA191142

Title :   Transparent Glass Ceramics Doped by Chromium(III) and Chromium(III) and Neodymium(III) as New Materials for Lasers and Luminescent Solar Concentrators.

Descriptive Note : Rept. for. 1 Oct 86-30 Apr 87,

Corporate Author : HEBREW UNIV JERUSALEM (ISRAEL) DEPT OF INORGANIC AND ANALYTICAL CHEMISTRY

Personal Author(s) : Reis, Renata ; Buch, Alla ; Bouderbala, Mehdi ; Boulon, Georges ; Ish-Shalom, Moshe

PDF Url : ADA191142

Report Date : 30 Apr 1987

Pagination or Media Count : 37

Abstract : Transparent galss ceramics with Cr(III) were obtained by different thermal treatment of glass with composition (mol%) 73.6 SiO2, 11.8 Al2O3, 4.2. Li2O, 7.0 ZnO, 1.6 TiO2, 1.5 ZrO2, 0.3 As2O3, 0.024 Cr2O3, melted under various conditions. Parallel measurements of X-ray diffraction, optical and EPR spectra reveal the different formation of gahnite from precursor glass or petalite-like phase. Laser excited emission spectra and decay curves of Cr3+ in gahnite-type glass-ceramics are compared with those in gahnite crystals. The nature of the Cr3+ sites is determined from the positions of the emission and excitation peaks and from measurements of the decay times.

Descriptors :   *CERAMIC MATERIALS, *OPTICAL MATERIALS, EMISSION SPECTRA, EXCITATION, GLASS, HEAT TREATMENT, LASERS, OXIDES, PRECURSORS, TRANSPARENCE, X RAY DIFFRACTION, ZINC, NEODYMIUM, SYNTHESIS(CHEMISTRY), LASER APPLICATIONS, DOPING, SOLAR ENERGY, TABLES(DATA), MELTS, CRYSTALLIZATION, SPECTRA, ISRAEL, CERAMIC MATERIALS, CRYSTALS, DECAY, EMISSION SPECTRA, EXCITATION, GLASS, HEAT TREATMENT, LASERS, MEASUREMENT, PRECURSORS, TRANSPARENCE, X RAY DIFFRACTION

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE