Negative thermal expansion and photoluminescence in solid solution (HfSc)0.83W2.25P0.83O12–δ<xref rid="cpb_26_10_106501_fn1" ref-type="fn">*</xref> <fn id="cpb_26_10_106501_fn1"> <label>*</label> 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 </fn>

Negative thermal expansion and photoluminescence in solid solution (HfSc)_0.83W_2.25P_0.83O_12–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

Liang Yuan^{1, 2, †}, Cheng Yong-Guang², Ge Xiang-Hong², Yuan Bao-He², Guo Juan², Sun Qian², Liang Er-Jun²

(color online) Structure analysis of the sample: (a) XRD patterns of the powder sample at room temperature and the results of the Pawley analysis using space group Pmmm (No. 47) (R_p = 5.11%, R_wp = 6.86%, and R_exp = 4.64%). The solid black line represents the observed profile. The “×” signs represent the calculated profile. Vertical bars indicate the position of Bragg peaks for this phase; the blue curve in the middle is the difference between the observed and calculated patterns. (b) Indexes of the RT XRD pattern of the solid solution with the space group Pmmm (No. 47) from 10° to 45°.