title: Spectroscopic properties of transparent Er-doped oxyfluoride glass-ceramics with GdF₃.
abstract: Optically active glass-ceramics (GC) with the low-phonon phases of fluorides, doped with Er(3+) was studied. Glass based on SiO₂-Al₂O₃-Na₂F₂-Na₂O-GdF₃-BaO system was obtained. Dopant were introduced to the glass in an amount of 0.01 mol Er₂O₃ per 1 mol of glass. DTA/DSC study shows multi-stage crystallization. XRD identification of obtained phases did not confirm the presence of pure GdF₃ phase. Instead of that ceramization process led to formation of NaGdF₄ and BaGdF₅. The structural changes were studied using FT-IR spectroscopic method. The study of luminescence of the samples confirmed that optical properties of the obtained GC depend on crystallizing phases during ceramization. Time resolved spectroscopy of Er-doped glass showed the 3 and 8 times increase of lifetime of emission from (4)S₃/₂ and (4)F₉/₂ states, respectively. It confirms the erbium ions have ability to locate in the low phonon gadolinium-based crystallites. The results give possibility to obtain a new material for optoelectronic application.
authors: AGH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza Ave. 30, 30-059 Krakow, Poland. Electronic address: msroda@agh.edu.pl.
authors: Marcin
authors: M
authors: Środa
authors: AGH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza Ave. 30, 30-059 Krakow, Poland.
authors: Krzysztof
authors: K
authors: Szlósarczyk
authors: Nicolaus Copernicus University, Institute of Physics, Grudziadzka St. 5, 87-100 Torun, Poland.
authors: Marek
authors: M
authors: Różański
authors: AGH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza Ave. 30, 30-059 Krakow, Poland.
authors: Maciej
authors: M
authors: Sitarz
authors: AGH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza Ave. 30, 30-059 Krakow, Poland.
authors: Piotr
authors: P
authors: Jeleń
mesh_terms: D002516:Ceramics / Q000737:chemistry*; D004871:Erbium / Q000737:chemistry*; D005459:Fluorides / Q000737:chemistry*; D005461:Fluorine / Q000737:chemistry*; D005682:Gadolinium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D010087:Oxides; D005461:Fluorine; D004871:Erbium; C014559:fluorine monoxide; C023506:Glass ceramics; D005682:Gadolinium; D005459:Fluorides
keywords: Er; FTIR; GdF(3); Oxyfluoride glass; Time-resolved spectroscopy; Transparent glass–ceramics