Dielectric properties of Sr_1+XBi_2-(2/3)X(V_XNb_1-X)₂O₉ [X = 0.1 and 0.2] ceramics

Results of systematic studies on dielectric properties of Sr_1+XBi_2-(2/3)X(V_XNb_1-X)₂O₉[X = 0.1 and 0.2] prepared by solid state route is reported. X-ray diffraction (XRD) studies on Sr_1+XBi_2-(2/3)X(V_XNb_1-X)₂O₉ with X = 0.1 revealed that the single-phase layered perovskites was formed without any detectable secondary phase However, with X=0.2, in addition to the major layered perovskite phase, a minor unknown phase was noticed. An enhancement in the dielectric properties of SrBi₂Nb₂O₉ (SBN) was observed with the increase in partial substitution of pentavalent niobium ions (0.68 Å) by smaller pentavalent vanadium ions (0.59 Å) in the B sites.