Abstrait

Processing, structural and microstructural properties of zirconium doped 212-Bi-Sr-vanadate ferroelectrics ceramics

M.Morsy Abou Sekkina, M.Khaled Elsabawy, A.Mohamed Asker

The present samples having the general formula Bi2SrV2-x ZrxO9, where (x=0.05, 0.1, 0.2, 0.3, 0.6)were carefully synthesized and processed by using solid state reaction route and sintering temperature at 850oC for 10 hrs. TGA and DTAthermal analyses were carried out on the green mixture to identify the best thermal treatment for processing of Bi-Sr-V-O system. XRD-analysis of the prepared samples proved that Zr-dopant can substitute successfully until x=0.6 mole on the Bi-layered perovskite crystal structure. SEmicroscopy indicated that the average grain size was found to be in between 1.5 and 1.9m. Zr - dopings have slight effects on both ESR-signals and conductionmechanismof Zr-doped Bi-Sr-VO regime.