Hydrothermal synthesis of Yb3+, Tm3+ co-doped Gd6MoO12 and its upconversion properties*
Di Qiu-Mei, Sun Yu-Mei, Xu Qi-Guang, Han Liu, Xue Bing, Sun Jia-Yue†
       
(a) XRD patterns of sample D; (b) the SEM image of sample D.