Structural and Magnetic Properties of Co Doped Iron Oxide Nanoparticles *

Content Provider	Semantic Scholar
Author	Riaz, Saira Naseem, Shahzad
Copyright Year	2014
Abstract	We here report the preparation and characterization of cobalt doped iron oxide nanoparticles using sol-gel method. The dopant concentration is varied as 2%, 4%, 6%, 8% and 10%. The position of diffraction peaks shifts to slightly higher angles due to smaller ionic radii of cobalt as compared to that of iron. No peaks corresponding to cobalt or cobalt oxide are observed indicating that dopant has been successfully incorporated in the host lattice. Cobalt with electronic configuration of [Ar]3d4s has one more electron than iron. Cobalt atom donates one d and two s electrons to oxygen that results in remaining six electrons on cobalt. When Co is substituted for Fe with spin down electron the spin down d band gets completely filled with remaining one delectron residing in spin up band. This results in increase in net magnetization in cobalt doped iron oxide nanoparticles as compared to undoped iron oxide nanoparticles.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.i-asem.org/publication_conf/acem14/7.SMM/W4C.2.MS524_1005F.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article