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1 Materials Science Poland

1 2009

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Rapid synthesis of Nd:YAG nanopowder by microwave flash combustion

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Choudhary R. , Laishram K. , Gupta R. K.

Materials Science Poland

2009

tom Vol. 27, No. 4/1

1025--1031

Nd:YAG nanopowders were successfully synthesized by a novel approach using rapid microwave drying of sol. Citrate nitrate sol was treated in a microwave oven for a few minutes. The as-prepared precursor was calcined at 900 °C for 2 h. Characterization was done by thermogravimetric analysis, Fourier transform infrared spectroscopy, X-Ray diffraction (XRD) and transmission electron microscopy (TEM). XRD showed the formation of phase pure polycrystalline YAG. The particle size was found to be 24 nm (estimated from Scherrer´s equation). TEM indicated that the particle size was in the 24-70 nm range. Nd3+ doping was confirmed by SEM-EDX. Nd:YAG nanopowder synthesized by this method was of low agglomeration and the particles were spherical in shape.