Investigation on Barium Zirconate Nanocomposite for Dielectric Properties

The barium zirconate (BaZrO 3 ) Perovskite is of interest for various fields of applications. It has high corrosion resistance with respect to molten phases formed during the synthesis of copper-oxide-based super conducting single crystal. In the present investigation, ZrO 2 and BaZrO 3 were prepared by co-precipitation method. The samples were characterized by powder X-ray diffraction, FT-IR spectra and EDAX-shows the elemental analysis of the specimens. ZrO 2 and BaZrO 3 SEM micrograph of the ZrO 2 and BaZrO 3 shows the morphological structure of both of the samples it resembles a nano cluster of spherical particles like a flower. Most of the particles arranged like an agglomerates. The Photoluminescence spectra indicates the blue emission at zirconate. The red emission region is shifted of barium. The high ion exchange ability and redox moment must make it useful in many catalystic processes and also it made the material is useful for the flurosense lamp and flat panel displays. The dielectric constant and dielectric loss were determined as a function of frequency at 1 MHz. It is found to be 63.56 forzirconia and 78.24 for barium zirconate. Due to its high dielectric constant value barium zirconate may be useful in case of ferroelectric applications.