Abstract
Cr3＋ doped magnesia aluminum spinel has potential applications in the fields of sensing, scintillator and laser. The structure, morphology, photoluminescence and diffuse reflection spectra of Mg(Al,Y)2O4:Cr3＋ were examined as a function of toluene content during the Pechini-type hydrothermal process. Toluene solvent changed the microstructure of Mg(Al,Y)2O4:Cr3＋ nanopowders, especially for the ratio of Al:Mg in the sample. Toluene also improved the agglomeration of nanopowders, and the luminescent intensity of the sample prepared with 60% and 75% toluene was enhanced by 16%.
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