Preparation and Characterization of Gd3 Sc2 Ga3 O12 Polycrystalline Material by Co-Precipitation Method

• Published in: Journal of rare earths Vol. 25; no. 2; pp. 158 - 162
• Main Author: 邵淑芳 张庆礼 苏静 孙敦陆 王召兵 殷绍唐
• Format: Journal Article
• Language: English
• Published: 2007
• Subjects: Gd3Sc2Ga3O12; 共沉淀法; 多晶材料
• ISSN: 1002-0721; 2509-4963

Gd3Sc2Ga3O12 polycrystalline material for single crystal growth was prepared with Ga, Gd2O3 and Sc2O3 as starting materials and aqueous ammonia as the precipitator by co-precipitation method. The precursors sintered at various temperatures were characterized by infrared spectra （IR）, X-ray diffractometry （XRD） and transmitted electron microscopy （TEM）. The results showed that pure GSGG phase could be obtained at 900 ℃. The sintered powders were well-dispersed and less-aggregated in the sintered temperature range of 900 - 1000 ℃. XRD and TEM show that the polycrystalline particle sizes of the polycrystalline powders were about 20 - 50 nm. Compared with the method that Ga2O3, Gd2O3 and Sc2O3 were mixed directly and sintered to get polycrystalline materials, the synthesized temperature was lower and sintered time was shorter. Thus co-precipitation was a good method to synthesize GSGG polycrystalline material.