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

Thippeswamy, A.; Manjunatha, M.N.; Chavan, Prabhakar; Krishnamurthy, G .

doi:10.22034/abec.2024.718628

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

Document Type : Original Article

Authors

A. Thippeswamy ¹

M.N. Manjunatha ²

Prabhakar Chavan ³

G . Krishnamurthy ⁴

¹ Department of PG Studies in Industrial Chemistry, Government Arts and Science College (Autonomous), Karwar -581301, Karnataka, India

² Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore, Karnataka, India

³ Department of PG Studies and Research in Chemistry, Sahyadri Science College, Constituent College of Kuvempu University, Shivamogga, Karnataka, India -577203

⁴ Department of PG Studies and Research in Chemistry and Industrial Chemistry, Sahyadri Science College, Constituent College of Kuvempu University, Shivamogga, Karnataka, India -577203

10.22034/abec.2024.718628

Abstract

In the present study, erbium-doped nickel ferrites, Ni_0.5Sr_0.5Er_xFe_2-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_0.5Sr_0.5Er_xFe_2-xO₄without 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_0.5Sr_0.5Er_xFe_2-xO₄to detect the electron transfer reactions using cyclic voltammetry and also to sense the presence of Hg²⁺in the polluted sample.

Keywords

Spinel lattice

Saturation magnetisation

Self propagation

Powder XRD

Cyclic voltammetry, Optical band gap

Subjects