Sr1-xBaxBi2TaNbO9 materials have been synthesized using a chemical solution route. Detailed x-ray diffraction and Raman spectroscopic studies indicates the formation of complete solid solutions for all compositions (x = 0.0 to 1.00) in Sr1-xBaxBi2TaNbO9. Thin films were deposited by spin coating. Optical transmission of the film deposited on quartz disk showed the typical interference effect of optical thin films. Ferroelectric polarization on Sr0.5Ba05Bi2TaNbO9 film deposited on Pt substrate and annealed at 700 degreesC, was measured to be 13.5 muC/cm(2).