Electronic and Optical Properties of Sodium Niobate: A Density Functional Theory Study

Figure 1

Crystalline phases of NaNbO₃ at room temperature and below in comparison to the cubic perovskite phase (, SG 221) (d). The rhombohedral phase (SG 161) (a), the orthorhombic phase (SG 57) (b), and the monoclinic phase (SG 6) (c) are shown. Pictures have been generated using VESTA [32].

(a)

(b)

(c)

(d)