N. Singh et D. Pandey, DIFFUSE FERROELECTRIC TRANSITION AND RELAXATIONAL DIPOLAR FREEZING IN(BA,SR)TIO3 .2. ROLE OF SR CONCENTRATION IN THE DYNAMICS OF FREEZING, Journal of physics. Condensed matter, 8(23), 1996, pp. 4269-4287
A distinction between the behaviour of (Ba1-xSrx)TiO3 samples with x l
ess than or equal to 0.12 and x greater than or equal to 0.16 is made
on the basis of thermal hysteresis in the temperature dependence of th
e dielectric constant and the frequency dependence of the temperature
at which the dielectric constant peaks. The scaling behaviour of the d
ielectric loss spectra for all the compositions suggests that the dist
ribution of relaxation times is temperature independent. It is propose
d that, for x less than or equal to 0.12 and x greater than or equal t
o 0.16, the system is in a domain and dipolar glass state, respectivel
y.