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以碳酸氢铵为沉淀剂采用共沉淀法和添加分散剂的方式,获得具有高烧结活性的碳酸盐前驱体,这种前驱体在较低的温度下烧结即可转变成相.同时借助DTA-TG、IR、XRD和TEM等测试手段对前驱体和YAG粉体进行表征.结果表明:在分散剂存在的情况下,此800℃左右煅烧2h前驱物直接转变为纯的YAG相,而无其它的杂质相,所得的YAG粉体的颗粒尺寸约20nm,是单分散的形貌近似球形的.此外不同温度下粉体的荧光性质表明,随着烧结温度的提高发光强度有所增加.

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