Conduction and magnetization improvement of BiFeO3 multiferroic nanoparticles by Ag+ doping

• Flash auto combustion method was successful in the preparation of Ag doped BiFeO3 in nanosize.
• Ag doping results in hexagonal platelet shapes up to x = 0.10, at x ≥ 0.15 needle shape predominates.
• Mixed conduction is obtained in Ag doped samples.
• This nanometric multiferroic could be recommended as attractive cathode for solid oxide fuel cell.

Nanometric multiferroic namely Ag doped (BiFeO3) was synthesized using flash auto combustion technique and glycine as a fuel. Single phase rhombohedral–hexagonal perovskite structure was obtained by annealing at 550 °C, as determined from XRD. High resolution transmission electron microscope (HRTEM) clarifies the hexagonal platelet shape with size 17.9 nm. Maximum room temperature AC conductivity was obtained at Ag content of x = 0.10. The results of this study promote the use of such multiferroic in solid oxide fuel cell applications.

HRTEM micrographs of the samples BiFeO3.Figure optionsDownload as PowerPoint slide