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采用共沉淀方法,以氨水为沉淀剂,与硝酸盐的混合溶液反应得到YAG、Nd:YAG前驱体,并在不同的温度下对前驱体进行锻烧.利用红外光谱(FT-IR)、热重/差热分析(TG/DTA)、X射线衍射(XRD)、透射电镜(TEM)等技术对YAG前驱物及煅烧粉体进行表征,对Nd:YAG粉体的发光性能进行了测试.结果表明,在800℃下煅烧YAG前驱体,得到纯YAG晶相,无YAP、YAM中间相的出现;XRD、TEM和比表面分析表明在800~1000℃煅烧所得粉体晶粒直径为40~100nm,具有较好的分散性.同时荧光测试表明Nd:YAG粉体具有良好的发光性能.

参考文献

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