以Lu(NO₃)₃和NH₄HCO₃为原料, 采用沉淀法制备了平均粒径约为40nm的Lu₂O₃粉体, 以该粉体和市售的Al₂O₃、CeO₂超细粉体为原料, 采用固相反应工艺, 经1760℃真空烧结10h, 制备出透明的Ce:LuAG陶瓷, 该透明陶瓷在可见光范围内的透过率为56%, X射线激发下的发射光谱为Ce³⁺的特征发射, 范围在470~650nm, 和同类单晶的光谱一致, 正好在硅光电二极管的高敏感曲线范围内, 满足于闪烁体的性能要求, 是一种有应用前景的闪烁材料.

Lu₂O₃ powders with an average particle size of about 40nm were produced by a precipitation methed using Lu (NO₃)₃ and NH₄HCO₃ as starting materials. The precipitation precursor is amorphous and transforms into pure Lu₂O₃ phase by calcining at 600℃ for 2h. The resultant Lu₂O₃, Al₂O₃ and CeO₂ powders were mixed by ball milling, and then sintered into a fully transparent Ce:LuAG ceramic body by vacuum sintering at 1760℃ for 10h and annealed at 1450℃ for 20h. The resultant transparent ceramic has a uniform microstructure with an average grain size of about 4μm. The polished Ce:LuAG ceramic disk with 1.2mm
thickness is highly transparent. The transmittance in the visible region reaches 56%, which is 72% of the theoretical value. The emission spectrum at 470~650nm with the double peak structure (517nm and 552nm) excited by
X-ray is the characteristic spectrum of Ce³⁺ due to the 5d-4f transition, is consistent with that of LuAG:Ce single crystals, well coupled with the silicon photodiodes and satisfies the property requirements of a scintillator. Ce:LuAG transparent ceramics is a promising scintillating material.