Electrical impedance and conductivity studies of nanocrystalline La³⁺ doped SrMoO₄

Scheelite type based oxide ion conducting materials like PbWO₄, BaMoO₄, SrMoO₄ having more ion conductivity and it can also be used as electrolyte for intermediate temperature solid oxide fuel cell (ITSOFC) applications. The present work aims to develop nanocrystalline La³⁺ doped SrMoO₄ to increase the ionic conductivity for ITSOFC applications. Nanocrystalline lanthanum doped SrMoO₄ samples were prepared by acrylamide assisted combustion process. All the samples were characterized by XRD, FTIR and SEM-EDX techniques. For the sintered lanthanum doped SrMoO₄ crystalline material, electrical conductivity of grain and grain boundary effects respectively evaluated from the impedance plot, measured at different temperatures. (author)