Zero and controllable thermal expansion in
Li Tao1, Liu Xian-Sheng2, Cheng Yong-Guang1, 3, Ge Xiang-Hong1, Zhang Meng-Di1, Lian Hong1, Zhang Ying1, Liang Er-Jun1, †, Li Yu-Xiao1, ‡
       

(color online) SEM images (a) and EDS spectra (b) of HfMgMo W x O12 with , 1.0, 1.5, 2.0, and 2.5. For comparison, SEM images (a) and EDS spectra (b) of HfMgMo3O12 and HfMgW3O12 are also presented.