A simple polymer-based co-precipitation method for tuning magnetic properties of cobalt-doped nickel ferrite nanoparticles
الموضوعات :
1 - Department of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Iran
الکلمات المفتاحية: Polymer, Co-precipitation, Magnetic nanoparticles,
ملخص المقالة :
Ion distribution on the spinel structure of ferrite nanoparticles is one of the critical factors that can affect magnetic properties. Therefore, if a method changes ion distribution, it can be used for fabrication (synthesis) of nanoparticles with different magnetic properties that apply in the diverse of technology field. In this work, the dependence of magnetic characteristics of the cobalt-doped nickel ferrite nanoparticles on Polyvinyl alcohol (PVA) assisted co-precipitation processes was studied. The structural and magnetic measurements were made employing XRD and VSM. Nanoparticles with a cubic spinel structure and an average size of about 29 nm have been synthesized, and their structure was confirmed using the XRD pattern and Sherrer’s equation. According to the obtained hysteresis loops of the five sets of synthesized nanoparticles, the coercive field and magnetization are different because of the interaction between polymer and metal ions in the reaction medium that causes a kind of ion immobilization and different ion distribution over the spinel structure. Such polymer-based synthesis procedures can be used to fabricate of magnetic nanoparticles with tunable magnetic properties.
