摘要
采用熔融和晶化技术合成出含CaF2微晶的Nd^3+离子掺杂透明氟氧化物玻璃陶瓷材料,并通过DTA,XRD,FEG—ESEM和UV—Vis—Nir分光光度计和傅里叶变换荧光光谱仪等对样品进行了表征.结果表明,玻璃陶瓷主晶相为CaF2,晶相粒径为15nm;可见光透过率为78%~87%,近红外透过率为84%~93%;由于Nd^3+在热处理后优先富集在具有低声子能量的CaF2晶相中,从而改变了配体场,使荧光谱线在1060nm处的峰值比原始玻璃强度大.
Nd^3+ -doped transparent oxyfluoride glass ceramics containing CaF2 was prepared through controlled crystallization of melt-quenched glass. The sample is characterized by DTA, XRD and FEG-ESEM. The result indicates that the main phase of crystal is CaFEand the crystalline particle size is 15 nm. The optical transmittance is about 78%-87% in the visible region and 84%-93% in the near-infrared region. Fluorescence measurements exhibit a stronger emission especially at 1060 nm in the glass ceramics than in the precursor glass, and a larger excited emission section value than the precursor glass, due to the incorporation of Nd^3+ into CaF2 during the crystallization.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第4期677-680,共4页
Chemical Journal of Chinese Universities
基金
教育部科学技术重点项目基金(批准号:205037)资助
关键词
钕掺杂
氟氧化物
玻璃陶瓷
透明
Neodymium-doping
Oxyiluoride
Glass-ceramics
Transparency