| Authors | Ghader Ahmadpour |
|---|---|
| Conference Title | Proceedings of 5th International Congress on Nanoscience & Nanotechnology (ICNN2014) |
| Holding Date of Conference | 2014-10-22 |
| Event Place | Tehran |
| Presentation | POSTER |
| Conference Level | International Conferences |
Abstract
Abstract: Spinel ferrite nanoparticles with composition of Ni0.6-xZn0.4CuxFe2O4 (x with the step of 0.1) was synthesized by the sol – gel auto-combustion method. Molar ratio of metal nitrates to citric acid (MN:CA) were selected as (1:1) and (1:2). X-ray diffraction (XRD), field emission scanning electronic microscope (FE-SEM), transmission electronic microscope (TEM), thermal gravity (TG), differential thermal analysis (DTA), vibrating scanning magnetic (VSM), and zero field cooling (ZFC) were carried out in order to characterize the structural and magnetic properties of nanoparticles. It was found that citric acid and copper contents affect the size of particles. The XRD results confirmed the formation of single phase of spinel ferrite nanoparticles for a whole series of samples. TEM images and FE-SEM micrographs revealed that NiCuZn ferrite particles are in the nanometer range. VSM results clearly showed that particles size and magnetization values of nanoparticles decreases with an increase in amounts of citric acid and copper. Also, ZFC curves obtained by SQUID confirmed that blocking temperature for Ni0.6-xZn0.4CuxFe2O4 ferrite increases with an increase in copper contents.
tags: NiCuZn ferrite, magnetic properties, particles size, citric acid, Cu substitution