Author/Authors :
T. Badapanda، نويسنده , , T. and Sarangi، نويسنده , , S. K. Behera، نويسنده , , B. and Sahoo، نويسنده , , P.K. and Anwar، نويسنده , , S. and Sinha، نويسنده , , T.P. and Luz Jr.، نويسنده , , G.E. and Longo، نويسنده , , E. and Cavalcante، نويسنده , , L.S.، نويسنده ,
Abstract :
For this study, a microcrystalline Ba(Zr0.05Ti0.95)O3 (BZT) powder was prepared by a high energy ball milling method followed by calcination at 1100 °C for 4 h. The calcined powder was structurally characterized by X-ray diffraction and Rietveld refinement data, which showed that this material has a perovskite-type tetragonal structure with a space group of (P4mmm). The micro-Raman spectrum revealed local lattice distortions due to distorted octahedral [TiO6] clusters. The temperature and frequency-dependent dielectric study of the BZT ceramic showed normal phase transition behavior. The ferroelectric property was studied by a P–E hysteresis loop. Optical band gap was investigated by ultraviolet–visible (UV–vis) absorption spectroscopy at room temperature. The UV–vis spectrum indicated that the BZT powder has an optical band gap of 3.15 eV.
Keywords :
High Energy Ball Milling , Raman spectroscopy , Ferroelectric properties , P–E loop , Optical band gap
