Figure 1
(a) The unit cell of fcc-Ca under ambient conditions. (b) The unit cell of the NaCl-type structure of CaO under ambient conditions: O (red) and Ca atoms (light green). (c) The simple cubic phase of Ca (α-Po structure) obtained at 32 GPa. (d) The CsCl-type structure of CaO obtained at 60–70 GPa. Colours as in (b). |