Tungsten-bronze type tetragonal Sr x Ba 1–x Nb 2 O 6 (SBN) ceramics have been synthesized by pressure-less sintering at 1250°C through a mixed-oxide route. With increasing x value in the range from 0.3 to 0.6, the Curie temperature shifted to lower temperature, but the corresponding maximum dielectric constant increased. Further, Sr 0.3 Ba 0.7 Nb 2 O 6 thin films have been formed by pulsed YAG laser deposition (PLD) technique using a selected SBN bulk target with various choices of the deposition parameters. When Pt-coated Si substrates were used for PLD, a preferential c-axis-ordered structure was observed in the films deposited using an energy density above 2.0 J/cm 2 , at a substrate temperature above 650°C, and in oxygen partial pressure below 7 Pa. The thin film yielded a rhomboidal P–E hysteresis loop, and showing a remanent polarization (P r ) of 3.1 μ C/cm 2 and coercive field (E c ) of 1.28 kV/cm.