采用均相沉淀法,以Al(NO3)3·9H2O、Y2O3、Nd2O3、(NH4)2SO4和NH4 HCO3为原料,正硅酸乙酯为添加剂,制备Nd:YAG纳米粉末；并探讨了均相沉淀法制备Nd:YAG纳米粉末的反应机理.研究结果表明,粉体在800℃时为无定型态,当温度达到900℃时析出大量YAlO3(YAP)和少量Y3Al5O12 (YAG)晶体,当温度达到1000℃时就全部转化为YAG立方晶相；混合溶液生成沉淀物是由Al3+的沉淀所决定的；Al3+首先均相成核,随后y3+和Nd3+以Al沉淀物为异相核发生异相成核,形成的沉淀物覆着于Al沉淀物表面,推测沉淀物结构可能为钇包覆铝的核壳结构.
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