Synthesis, Structural, Magnetic, And Electrochemical Properties of Er-Ni Doped Strontium Nanoferrites

In the present study, erbium-doped nickel ferrites, Ni0.5Sr0.5ErxFe2-xO4 (x=0.00<x<0.09) spinel nanoparticles were synthesized by the self-propagation method. Er3+ ions successfully doped into the spinel lattice of Ni(0.5)Sr(0.5)Er(x)Fe(2-x)O(4 )without any distortion. The influence of Er3+ ions on the structure, surface morphology, and magnetic behaviour has been determined by powder XRD, EF-SEM, DSC-TGA, VSM, etc., and PXRD confirmed the spinel nanocrystalline structure. SEM analysis showed the size is between 27-30 nm with irregular morphology and grain boundaries. EDAX confirms elements in the expected percentage. The weight loss due to the degradation of synthesised nanoparticles (NPs) was studied by TGA-DSC. VSM at room temperature confirms the cubic spinel structure and soft magnetic in nature and can be altered with a variation of Er3+ ions. The glassy carbon electrode (GCE) was modified by coating a layer of synthesized Ni(0.5)Sr(0.5)Er(x)Fe(2-x)O(4 )to detect the electron transfer reactions using cyclic voltammetry and also to sense the presence of Hg(2+ )in the polluted sample.