Effect of Sr and Mn co-doping on multiferroic properties of BiFeO3 via sol-gel chemical process

4th International Conference on Structure, Processing and Properties of Materials

Jannat, Sumaiya^1 ; Islam, Md. Rafiqul^1 ; Sharif, Ahmed^1

Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka

1000, Bangladesh^1

关键词: BiFeO3;    Chemical process;    Chemical routes;    CO substitution;    Field emission scanning electron microscopes;    Multiferroic properties;    Structural transformation;    UV-vis absorbance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/438/1/012014/pdf
DOI  :  10.1088/1757-899X/438/1/012014

来源: IOP

【 摘 要 】

In this contribution, Sr and Mn co-doped Bi0.90Sr0.10FexMn1 - xO3 (X = 0, 5%, 10%, 15%) nanoparticles were prepared by sol-gel (chemical route) method to observe the dominance of co-substitution on their grain size, morphology, UV-vis absorbance and magnetic properties. Co-substitution of Sr and Mn in BiFeO3, leads to structural transformation from rhombohedral (R3c) to orthorhombic (Pn21a). Field emission scanning electron microscope reveals that upon Mn doping nanoparticles become finer. The M-H loops depict that at 15 mol. % Mn doping the saturation magnetization (Ms) is enhanced significantly. Moreover, the synthesized nanoparticles absorb visible light and their band gaps reduce substantially.