Effects of Optical Properties of Bismuth Ferrite Thin Films
The bismuth ferrite(BiFeO3)thin films were prepared on silicon substrate and quartz substrate by radio frequency magnetron sputtering,respectively.The influence of annealing temperature on the morphology,composition and optical properties of BiFeO3 thin films was studied.Experimental results showed that the grain size of BiFeO3 thin films increased and composition changed greatly after annealing at different temperatures.By testing the transmission and reflection spectra of BiFeO3 thin films,it was found that BiFeO3 thin films had the narrowest bandgap when the annealing temperature was 450℃.
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