Nd:YAG纳米粉体的制备和光谱性质  

Preparation and Spectral Characteristics of Nd:YAG Nano-Powder

作　　者：苏静[1] 张庆礼[2] 王召兵[3] 孙敦陆[2] 谷长江[2] 邵淑芳[2] 张霞[2] 殷绍唐[2] 

机构地区：[1]南京信息工程大学数理学院,江苏南京210044 [2]中国科学院安徽光学精密机械研究所,安徽合肥230031 [3]曲阜师范大学激光研究所,山东曲阜273165

出　　处：《中国稀土学报》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

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.

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 

分 类 号：TQ174.1[化学工程—陶瓷工业]