Figure 2
Single crystal of Ce4[Si4O3 + xN7 − x]Cl1 − xOx, x ≃ 0.2, within the pressure chamber (crystal B, ∼ 110 µm diameter). The crystal colour changes from light orange for the low-pressure phase (8.5 GPa; left side) to dark red for the high-pressure phase (8.6 GPa; right side). |