Preparation of Y 3Al 5O 12:Sm powders by microwave-induced combustion process and their luminescent properties

• Published in: Journal of alloys and compounds Vol. 419; no. 1; pp. 197 - 200
• Main Authors: Tsao, Shen, Fu, Yen-Pei, Hu, Chen-Ti
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2006
• Subjects: Luminescence; Microwave-induced combustion; YAG; 74.25.Gz; 78.55.Hx; 74.62.Bf; Luminescence; Microwave-induced combustion; YAG
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2005.08.071

A novel ceramic synthesis technique, microwave-induced combustion process was investigated for the production of Y 3Al 5O 12:Sm powders with improved physical and luminescence properties. This technique involves the reaction of aluminum nitrate (Al(NO 3) 3·9H 2O), yttrium nitrate (Y(NO 3) 3·6H 2O), samarium nitrate (Sm(NO 3) 3·6H 2O), and carbohydrazide (CO(N 2H 3) 2) at microwave-oven and the whole process took only 30 min. The powders of Y 3Al 5O 12:Sm were further investigated by X-ray diffractometer (XRD), scanning electron microscope (SEM), infrared spectroscopy (IR), and photoluminescence emission spectra (PL). The results showed that the formation temperature of YAG phase is significantly low, compared to solid-state reaction route of constituent oxides. For luminescence property, the emission intensity of YAG doped with 3 mol% Sm synthesized by microwave-induced combustion reaches the maximum emission intensity.