Elaboration and dielectric study of ferroelectric or relaxor ceramics in the ternary system BaTiO3-NaNbO3-BaSnO3

► [xNaNbO3 + (1-x) BaSnO3], is a single phase perovskite compound. ► The values of Tm and ε′rmax at Tm increase when replacing BaSnO3 for NaNbO3. ► The introduction of Sn atom in the B site develops develop new ferroelectric or relaxor compounds with high permittivity close to 300K. ► When compared to the BSnNx, the BTSnNxy exhibit an increase of ε′rmax and a decrease of Tm or TC by addition of Ti4+and Sn4+, respectively. ► Variation of BTSnNxy may allow control of the physical properties.