Investigation of ferromagnetic properties in Fe/Co substituted BaSnO3 perovskite stannates

We report on structural and magnetic properties in Fe/Co substituted BaSnO3 polycrystalline samples synthesized by conventional nitrate route method. The substitution of Fe/Co at Sn site and the phase formation is confirmed by X-ray diffraction and microstructural measurements. The sample crystallizes to cubic perovskite structure indexed to Pm3̅m space group. Fe/Co substituted BaSnO3 exhibit ferromagnetism at room temperature and ferromagnetic property varies gradually with increase in substitution of Co content. The observed enhancement of ferromagnetism in the studied samples can be explained due to F-Center exchange interactions. The presence of F-centers is evidenced by the electron spin resonance (ESR) spectrum on the studied samples, which also provides supporting evidence for the observed ferromagnetism.