Vs. Tiwari et al., DIFFUSE FERROELECTRIC TRANSITION AND RELAXATIONAL DIPOLAR FREEZING IN(BA,SR)TIO3, Journal of physics. Condensed matter, 7(7), 1995, pp. 1441-1460
The effect of Sr2+ substitution on the structure and dielectric behavi
our of BaTiO3 is reported. It is shown that the smearing of the variat
ion of dielectric constant with temperature in such samples is not due
to compositional inhomogeneities. Observation of relaxational dipolar
freezing below the hump temperature indicates the similarity of diffu
se ferroelectric transition and orientational glass behaviour.