In-Depth Analysis Of Altering Fe Electronic Configuration Due To Doping In B Site Perovskite Structure

Author : S.Suasmoro, F.Fitriana

Abstract :The composition of La2x Ba0.5-x Sr0.5-x Fe1-y Niy O3-δ (x = 0, 0.25; y=0,0.1) materials were successfully synthesized through self-combustion technique followed by calcination at 850 °C for 6 hours and sintering st 1100 °C for 6 hours. Structural analysis confirmed the formation of a cubic perovskite structure, with Fe and Ni occupying octahedral coordination sites. The oxidation state was verified to be Fe3+/Fe 4+ and Ni4+/ Ni5+. Spin state analysis using XAS suggested that Fe and Ni adopt a high-spin configuration in Ba0 5 Sr0 5 FeO3-δ and Ba0 5 Sr0 5 Fe0 9 Ni0 1 O3-δ . When La substituted Ba/Sr in La0.5 Ba0.25 Sr0.25 Fe0.9 Ni0.1 O3-δ the electronic configuration becomes a low spin state. The influence on physical characteristic (magnetization) will be presented and discussed

Keywords :Perovskite, La-Ba-Sr-Fe-Ni-O system, self-combustion synthesis, spin state, XAS, magnetization, oxidation state, cubic structure, high-spin, low-spin configuration

Conference Name :International Conference on Atomic Physics, Systems and Applications (ICAPSA-25)

Conference Place Chicago, USA

Conference Date 7th Jul 2025