Fig. 4From: Defects on the Surface of Ti-Doped MgAl2O4 Nanophosphor a Stabilities of Ti in Mg or Al vacancy site on the surface of MgAl2O4: the red circle shows surface energy of Ti in Al site and the black dot is that of Ti in Mg site and b the binding energy of defect associates, TiAl ·–VAl′′′ as a function of distanceBack to article page