INFLUENCE OF Sm-Cr DOPING ON STRUCTURAL AND MAGNETIC PROPERTIES OF M-TYPE STRONTIUM HEXAFERRITE

Digest Journal of Nanomaterials and Biostructures

G. Asghar¹ 

关键词: Hexaferrites;    Coercivity;    Retentivity;    Hystersis loops;   

DOI  :  

学科分类：生物技术

来源: Institute of Materials Physics

【 摘 要 】

Strontium hexaferrite nanoparticles substituted with samarium and chromium having nominal composition SrFe12-2xSmxCrxO19 (x=0.0, 0.4, 0.8) have been synthesized by WOWS (With Out Water and Surfactants) sol–gel method. X-ray diffraction (XRD) studies showed that higher doping concentration results in the formation of impurity phases. Due to higher ionic radius of doped rare earth ion, Sm, lattice parameter “c” has increased. Doping of Sm-Cr caused the increase in grain growth confirmed from scanning electron microscope (SEM) images. Coercivity almost doubles for x=0.4 and afterword decreases due to the formation of impurity phase. Similar trend is observed for saturation magnetization and retentivity.

【 授权许可】

Unknown