  SrNaBi2Nb3O12 powder was prepared via the conventional solid-state reaction
method. X-ray structural studies confirmed the phase to be a three-layered
member of the Aurivillius family of oxides. SrNaBi2Nb3O12 (SNBN) ceramics
exhibited the typical characteristics of relaxor ferroelectrics, associated
with broad and dispersive dielectric maxima. The variation of temperature of
dielectric maxima (Tm) with frequency obeyed the Vogel-Fulcher relationship.
Relaxor behavior was believed to be arising from the cationic disorder at
A-site. Pinched ferroelectric hysteresis loops were observed well above Tm.
