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) (a) Survey scan XPS spectrum of the sample. (b)–(f) XPS spectra corresponding to the Hf 4f, W 4f, Sc 2p, O 1s, and P 2p orbitals.