Indian Journal of Pure and Applied Physics

The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off


Here we report the structural and magnetic properties of cluster of ultrafine copper ferrite (CuxFe1-xO4) nanoparticles with different Cu:Fe composition synthesized by aqueous chemical reduction technique. The morphological, microstructural and compositional studies confirm the formation ofCuxFe1-xO4 nanoparticles with varied Cu and Fe percentages which are polycrystalline in nature with fcc structure and average size of ~20 nm. Thermal stability and chemically purity of ferrite nanoparticles are ensured by analyzing the TGA/DTA curve in the temperature range 30-1000 oC. Magnetization vs magnetic field (M-H) hysteresis loops measured at two different temperatures (80K and 300K) reveal the typical ferromagnetic behavior ofCuxFe1-xO4nanoparticles with a systematic change in the saturation magnetization (MS), coercive field (Hc), remanent magnetization (Mr), Squareness (Mr/MS), hardness (α) and effective anisotropy energy constant (Keff) with the variation of Cu and Fe percentages. Tunable magnetic properties of ferrite nanoparticles with the variation of magnetic Fe and non-magnetic Cu are attributed to the modulation of effective anisotropy originated from the surface spin randomization.

Keywords

Soft magnetic materials; Ferrites; Nanoparticles; Magnetic properties.
User
Notifications
Font Size