Novel Concept of Non-Debye Dipole Relaxation Processes for the Interpretation of Physical Origin of Dielectric Loss in the Glass Formers, Drugs, Polymers and Plastic Crystals

Abstract: The physical origin of dielectric loss is shown to be sum of n number of subunits relaxation of a molecule, where n=1,2,3.. For each subunit relaxation, the idea of intermolecular dipole-dipole interactions triggered non-Debye dipole, ($\bf G$)${n}$=((1-g$_d$)$\bf G$${0}$)${n}$, and the ensuing dual dipole ($\bf G$${\pm}$)$n$=($\bf G$$_0$$\pm$$\bf G$)$_n$, relaxation processes is proposed, where $\bf G$${-}$=g${d}$$\bf G$${0}$, $\bf G$${+}$=(2-g${d}$)$\bf G$${0}$, and $\bf G$${0}$ is a Debye dipole. Each subunit motion is statistically highly independent process and discriminated by Debye and non-Debye relaxation (NDR) time, where g$_d$ is an exponent 0<g$_d$<1 and signifies interaction strength with a redistribution and conservation of Debye dielectric loss energy. The proposed concept provides a new insight for the NDR and discloses the physical origin of $\alpha$, $\beta$, $\gamma$, $\delta$ relaxations and excess wing of glass formers, plastic crystals, drugs, etc., with an excellent agreement with experimental results.