Figure 2
From: Crystal orientation of epitaxial film deposited on silicon surface

Schematics of growth of MgO deposited on Si substrate. MgO(001) cluster grows on Si(001) along with the relation of (a) cubic on cubic growth [MgO(100) // Si(100)] and (b) 45\(^{\circ }\) rotation growth [MgO(110) // Si(100)].