Vol. 3, Issue 4, Part A (2017)

Abstract
The Ce rare earth ion activated MgAl₂O₄ spinel powder phosphor was prepared at low temperature 500 ^oC using the combustion route. Analytical grade reagents magnesium nitrate (Mg (NO₃)₂), aluminium nitrate, (Al(NO₃)₃.9H₂O) and urea (NH₂.CO.NH₂) are used as precursors for the synthesis of MgAl₂O₄ while cerium nitrate is used for the doping of Ce ions in the host MgAl₂O₄. A structural property of the powder was characterized by X-ray diffraction (XRD). XRD showed that the Ce is successfully incorporated in the lattice. The estimated average crystalline size is about 40 nm for MgAl₂O₄. The photoluminescent property of prepared powder was investigated using excitation and emission spectroscopy at room temperatures.