Field cooled susceptibility of deuterated dipole glass

Abstract

We have performed a careful measurement of both pyroelectric currents and static charges to obtain the dielectric susceptibility of a deuterated mixed crystal DRADP-x(x = 0.4) in the region of glass transition. We have found an inadequacy of the pyroelectric measurements to define the field cooled susceptibility epsilon(FC). Instead we have applied the static charge measurement to obtain epsilon(FC) and come to a different conclusion from the previous one : the field cooled susceptibility epsilon(FC) remains to be equal to the zero-field cooled susceptibility epsilon(ZFC) across the glass transition temperature within the accessible time scales of static charge measurements.