Time dependent behaviour of third-order electric polarisation in a.c. reorienting field in molecular liquids

Time evolution curves of the change in nonlinear electric polarisation induced by a cosine field are theoretically calculated with the Smoluchowski-Debye molecular rotational diffusion equation. Graphs show the dynamics of the third-order electric polarisation versus the parameter R, defining the balance between the dipolar and anisotropically polarisable properties of the molecules.