Chinese Journal of Quantum Electronics, Volume. 27, Issue 1, 110(2010)
Preparation of nanoscaled Nd:YAG powders by the urea co-precipitation method
Nd:YAG nanoscaled powders were prepared by the co-precipitation method with Nd2O3, Y2O3 and Al(NO3)3?9H2O as the starting materials and CO(NH2)2 as the precipitator. The structure and morphology of the powders were investigated by XRD, TG-DTA, FESEM and laser particle analyzer. XRD patterns show that YAG phase and intermediate phase YAM were detected in the sample from the precursor calcined at 900 ℃ for 3 hours, the precursor completely transformed to YAG phase when it was calcined at 1000 ℃ for 3 hours, and the intensity of YAG X-ray diffraction peaks increased with the increase of calcination temperature. Lattice parameters of Nd:YAG phase calcined at 900 ℃~1200 ℃ changed from 1.2012 nm to 1.1994 nm, and the particle size ranged from 31~96 nm. The similar variation was given by a measure of laser particle analyzer. The TG-DTA results indicate that the mass loss value was about 43% when the precursor was heated up to 1200 ℃. Suspension was washed with distilled water and alcohol, respectively. The comparison results show that alcohol is more effective for the well-dispersion of the nano-sized Nd:YAG powders. The results provid references for preparing good powders of YAG transparent ceramics.
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LI Dong-qing, DING Li-hua, ZHANG Qing-li, SHAO Shu-fang, NING Kai-jie, YIN Shao-tang. Preparation of nanoscaled Nd:YAG powders by the urea co-precipitation method[J]. Chinese Journal of Quantum Electronics, 2010, 27(1): 110
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Received: Feb. 17, 2009
Accepted: --
Published Online: May. 31, 2010
The Author Email: Dong-qing LI (ldq7289@aiofm.ac.cn)
CSTR:32186.14.