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) (a) Structure refinement by the Pawley method with space group Pnma. Tick marks (bottom) indicate positions of the HfMgMo W O12 diffraction lines and the curve in the middle is the difference between the experimental and fitted results. (b) Lattice constants and volume change of HfMgMo W x O12 with , 1.0, 1.5, and 2.0.