Fig. 8

Dielectric and electrical properties of furnace-cooled FC–BFBT–SZx ceramics (x = 0, 0.02, and 0.04 mol%) at 1 MHz. (a) dielectric constant decreases with doping, (b) normalized dielectric constant shows better thermal stability, (c) dielectric loss is reduced, and (d) Curie–Weiss analysis indicates relaxor behavior with higher γ values.