Photoluminescence in wide band gap corundum Mg4Ta2O9 single crystals
Li Liang, Zheng Yu-Lu, Hu Yu-Xin, Li Fang-Fei, Zhou Qiang †, Cui Tian
(a) Refractive index and extinction coefficient versus wavelength, and (b) dielectric constant and dielectric loss factor versus wavelength of Mg4Ta2O9.