Negative thermal expansion and photoluminescence in solid solution (HfSc)0.83W2.25P0.83O12–δ Project supported by the National Natural Science Foundation of China (Grant Nos. 11574276, 51302249, and 11405028) and the Fundamental Research Fund for the Central Universities, China |
(color online) Schematics of (HfSc)0.83W2.25P0.83O12−δ structure viewed from (a) the a and (b) the c axes directions. |