Fig. 5
The proposed phase diagram for BiNiO3, showing the approximate boundaries between charge ordered Phase-I, charge liquid Phase-II, and the discovered charge glass Phase-Id. The boundaries are determined from the heating (above 300 K)/cooling (below 300 K)/increasing pressure data points. The blue bars correspond to the pressure hysteresis determined by SXRD experiments as shown in Fig. S1d, and the boundary with extrapolated blue dashed line is a guide for the eye. Open markers represent the previous studies in refs. 4,6,8,11, and full markers represent the current work. The diffraction patterns of the plotted pressure-temperature points are shown in Figs. S1 and S5. The point where charge solid, charge glass and charge liquid phases are all observed to coexist, close to the triple point, is indicated with a black triangle.
