Effect of particle size on magnetic properties of Ni0.6-xCuxZnFe2O4 spinel ferrite nanoparticles |
Paper ID : 1390-UFGNSM-FULL |
Authors: |
Abstract: |
Spinel ferrite with the composition of Ni0.6-xCuxZnFe2O4 (x= 0 – 0.5 with a step of 0.1) were prepared by a sol-gel and sol-gel auto-combustion method. X- ray powder diffractometery, Scanning electron microscopy, transmission electron microscopy and vibrating sample magnetometer were used to the structural and magnetic properties nanoparticles. The employing of citric acid in combustion process could greatly affect on the size of nanoparticles. It was found that the amount of copper in Ni0.6-xCuxZnFe2O4 ferrite affect on particle size. The synthesis nanoparticles by combustion have superparamagnetism behavior. With an increasing in Cu2+ content, magnetization and the blocking temperature increase. The phenomenological Néel – Brown and Vogel – Fulcher models were employed to distinguish between the interacting or non-interacting system. The parameters obtained for the Vogel – Fulcher equation indicate that there is strong interaction between nanoparticles. |
Keywords: |
Ni-Zn ferrite, sol-gel auto-combustion, Magnetic properties, cu-substituted |
Status : Paper Accepted (Poster Presentation) |