Synthesis and Characterization of Lithium-Substituted Cu-Mn Ferrite Nanoparticles

M A Mohshin Quraishi,M H R Khan

doi:10.1155/2013/910762

Abstract

The effect of Li substitution on the structural and magnetic properties of LixCu0.12Mn0.88−2xFe2+xO4(x= 0.00, 0.10, 0.20, 0.30, 0.40, and 0.44) ferrite nanoparticles prepared by combustion technique has been investigated. Structural and surface morphology have been studied by X-ray diffractometer (XRD) and high-resolution optical microscope, respectively. The observed particle size of various LixCu0.12Mn0.88−2xFe2+xO4is found to be in the range of 9 nm to 30 nm. XRD result confirms single-phase spinel structure for each composition. The lattice constant increases with increasing Li content. The bulk density shows a decreasing trend with Li substitution. The real part of initial permeability (μi′) and the grain size (D) increase with increasing Li content. It has been observed that the higher theμi′is, the lower the resonance frequency in LixCu0.12Mn0.88−2xFe2+xO4ferrites is.

Highlights

Ferrite nanoparticles have attracted a growing interest due to their potential applications such as magnetic recording [1], storage [2], and biotechnology [3]
The X-ray diffractometer (XRD) analysis was performed to verify the formation of spinel structure of various LixCu0.12Mn0.88−2xFe2+xO4 ferrites, in which Mn2+ is replaced with Li+ and Fe3+
The LixCu0.12Mn0.88−2xFe2+xO4 (x = 0.00 to x = 0.44) nanoparticles have been successfully synthesized by the combustion technique

Summary

Introduction

Ferrite nanoparticles have attracted a growing interest due to their potential applications such as magnetic recording [1], storage [2], and biotechnology [3]. It is well known that the physical and chemical properties of the nanosized magnetic materials are quite different from those of the bulk ones due to their surface effect and quantum confinement effects. These nanoparticles can be obtained through precipitation of metallic salts in different media as polymers [7], organic acid or alcohol [8], sugars [9], and so forth. This paper is devoted to study the effect of Li+ substitution on the physical and magnetic properties of LixCu0.12Mn0.88−2xFe2+xO4 ferrites prepared by combustion technique

Experimental

Results and Discussion

Conclusion