a (Å)

(GPa)

MgO (Present work)

4.263

148.39

3.760

MgO Ref. [18]

4.15

160.0

4.15

MgO Ref. [12]

4.165

176.01

3.25

MgO Ref. [19]

4.25

159.7

4.26

CaO(Present work)

4.805

148.014

1.824

CaO Ref. [20]

4.81

110

4.26

CaO Ref. [12]

4.953

106.47

3.62

CaO Ref. [11]

4.71

127.0

4.11