Figure 5
(a) Schematic for point group mm2 (C2v). (b) and (c) Transformation of the dipole moment in point group mm2 (C2v) viewed along different crystallographic directions. In (a)–(c), a ≠ b ≠ c, α = β = γ = 90°. (d) Schematic for point group 3m (C3v). (e) and (f) Transformation of the dipole moment in point group 3m (C3v) viewed along different crystallographic directions. In (d)–(f), a = b ≠ c, α = β = 90°, γ = 120°. |