摘要
采用共沉淀方法,以碳酸氢铵(NH4HCO3)为沉淀剂制备得到Nd:YAG前驱物,将其在不同的温度下煅烧并采用红外光谱(FT-IR)、X射线衍射(XRD)、透射电镜(TEM)、荧光光谱分析等技术对样品进行了表征。在900～1000℃下煅烧前驱物,出现YAP和YAM中间相并对共沉淀法中间相出现的原因进行了分析;获得纯YAG晶相的煅烧温度为1100℃,晶粒粒度分布约为40～80nm,具有良好的分散性。光谱研究表明Nd:YAG纳米粉体的发光性能良好,其红外光谱及荧光光谱与单晶无明显的差异。
Nd：YAG precursor was synthesized by a co-precipitation method with NH4HCO3 as the precipitant. The precursor and the powders sintered at different temperatures were characterized by infrared spectra （IR）, X-ray diffractometry （XRD）, transmitted electron microscopy（TEM）, fluorescence spectral analysis etc. The intermediate phases YAP and YAM in the powder sintered at 900- 1000 ℃ were detected and the reasons for the appearance of intermediate phases by co-precipitation method were analyzed. When the sintered temperature was up to 1100℃, pure and well-dispersed YAG phase with 40- 80 nm particle size can be obtained. Additionally, spectral studies showed that Nd：YAG nano-powder had good photoluminescence. Its fluorescence and infrared spectra had no obvious difference from that of the single crystal.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2007年第4期500-504,共5页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金(50472104
60478025)资助项目
关键词
无机非金属材料
ND:YAG
共沉淀法
透明陶瓷
纳米粉体
稀土
inorganic non-metal materials
Nd ： YAG
co-precipitation
transparent ceramics
nano-powder
rare earths
