Abstract
ZnAl2 O4 :Cr3+ , Tb3+ powders with different dopant contents have been synthesized by sol-gel method using the following precursors: zinc nitrate (Zn(NO3 )2 ), aluminum nitrate (Al(NO3 )3 ), terbium nitrate (Tb(NO3 )3 ), chrome nitrate (Cr(NO3 )3 ), and citric acid. The effect of the Cr3+ , Tb3+ concentration and heat-treating temperature on structural and optical properties of the synthesized samples has been studied.
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