ABSTRACT
212-Vanadate ceramics with formula Bi2SrV2-xUxO9, where (0 ≤ x ≤ 0.6 mole) were carefully
synthesized by solution routes with sintering temperature at 88 °C for 24 hrs. Structural analysis with
XRD proved that uranium (IV)-dopant can substitute successfully until x = 0.55 mole on the Bilayered perovskite crystal structure without damaging the original structure. It was observed that U –
doping have slight to moderate effects on both ESR-signals and conduction mechanism of U-doped
Bi-Sr-V-O regime. Electrical measurements indicated that the energy gap Eg and number of electrons
in conduction band Ncb increase as the ratio of U doping increases from x = 0.05 till x = 0.6 mole
respectively due to the increasing of paramagnetic character of uranium than vanadium.
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