537949.fig.002
Figure 2: X-ray diffraction patterns of products prepared by heating Tb3+-activated calcium silicate hydrate (CSH) phosphor. Tb/Ca atomic ratio, (a) 0, (b)–(e) 0.5. Heating temperature (°C), (a), (b) room temperature, (c) 800, (d) 900, and (e) 1000. :  CSH, ○:  β-Wollastonite.