Author(s)

Hanan Ali, Maram T. H. Abou Kana, Mohamed Atta Khedr

Department of Laser Sciences and Interactions, National Institute of Laser Enhanced Sciences, University of Cairo, Giza, Egypt.

Samarium doped Yttrium aluminum garnet (YAG) nanopowders with different concentration (0.5%, 1%, 2%, 3%, 5% and 8% mol) were prepared by simple and low cost co-precipitation method. We found that the precursor begins converting to pure YAG at relatively low temperature around 900°C, and no intermediate phases were detected. The powders annealed at 900°C and 1000°C in air with average particle size around ≈30 nm were characterized by means of X-ray diffraction (XRD) analysis and infrared (IR) spectroscopy. The photoluminescent measurements showed that the reddish-orange (RO) emission transition 4G5/2:6H7/2 is more prominent. In addition, the optimum concentration of doped Sm ions that lead to maximum intensity was reported. Also, fluorescence efficiencies as pumping power dependence for different Sm³⁺ ions concentrations were explored.

Sm³⁺; YAG Nanopowders; Concentration Dependence Optical Properties; Ceramics

Ali, H. , Abou Kana, M. and Khedr, M. (2014) Spectroscopy and Optical Properties of Sm³⁺:YAG Nanocrystalline Powder Prepared by Co-Precipitation Method: Effect of Sm³⁺ Ions Concentrations. Open Journal of Applied Sciences, 4, 96-102. doi: 10.4236/ojapps.2014.43011.