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Preparation of Ce:YAG Glass‐Ceramics with Low SiO 2
Author(s) -
Wang Lili,
Mei Lin,
He Gang,
Li Jiangtao,
Xu Lihua
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04700.x
Subject(s) - crystallization , materials science , supercooling , differential thermal analysis , phase (matter) , doping , sintering , analytical chemistry (journal) , mineralogy , chemical engineering , composite material , chemistry , diffraction , chromatography , optics , physics , optoelectronics , organic chemistry , engineering , thermodynamics
The Ce 3+ ‐doped Y 2 O 3 –Al 2 O 3 –SiO 2 ( YAS ) bulk glasses with low SiO 2 (≤40 mol%) were prepared by flame spray‐quench method and hot press sintering. YAG nanoglass‐ceramics were derived from YAS bulk glass by a controlled crystallization. The differential thermal analysis ( DTA ) results showed that the glass‐forming ability of YAS system was strongly dependent on SiO 2 content and the supercooling degree required for forming YAS glass increased with the decrease of SiO 2 content. The YAS glass compositions had been extended to low SiO 2 phase region (10–40 mol%) by flame spray‐quench method. The study of crystallization process showed that glass matrixes experienced initially a phase‐separation followed by crystallization during the heat treatment. The phase‐separated grains (100–300 nm) that were composed of YAG nanocrystallites precipitated in the glass matrix. And the intensity of emission spectra increased with the decreasing SiO 2 content.