Relaxor behavior in the (1− x)BaSnO 3 - xPbTiO 3 solid solution

Abstract

The relaxor behavior was revealed in the solid solution (1− x)BaSnO 3- xPbTiO 3[(1− x)BSn- xPT] with compositions near x = 0.50 . The real permittivity ( ε ′ ) and loss tangent ( tan δ ) exhibit diffuse and dispersive maxima, whose temperature shifts towards a higher temperature upon the increasing frequency. The frequency dependence of the temperature of the dielectric maximum ( T m ) follows the Vogel–Fulcher law, as in the canonical relaxor. A deviation from the Curie–Weiss law was observed below the Burns temperature ( T B ) and well above the Curie temperature ( T C ). These phenomena are well consistent with typical relaxors, which explains the existence of the relaxor behavior in the (1− x)BSn- xPT solid solution.