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Titanium doping effect and structural properties of titanium-(IV)-doped-Bi-Sr-Vanadate ferroelectric

Khaled M.Elsabawy, Morsy M.Abou Sekkina


The perovskite samples with general formula Bi2SrV2-x TixO9, 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 900oC for 25 hrs. TGA and DTA thermal analyses were carried out on the green mixture to identify the best thermal treatment for processing of Bi-Sr-V-O system. Structural investigations by using XRD – analysis of the prepared samples proved that Ti-dopant can substitute successfully until x= 0.45 mole on the Bi-layered perovskite crystal structure. SE-microscopy indicated that the average grain size was found to be in between 1.25 and 1.66 µm. Tidopings have slight to moderate effects on both ESR-signals and conductionmechanismof Ti-doped Bi-Sr-VOregime ferroelectric ceramic. Infrared absorption spectra recorded for Ti-doped samples show broad band characteristics to differentM-O-M vibrational modes.


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