DocumentCode :
906578
Title :
Structural and Magnetic Properties of Co Doped CeO 
Nano-Particles
Author :
Kumar, Shalendra ; Kim, Y.J. ; Koo, B.H. ; Choi, Heekyu ; Lee, Chan Gyu
Author_Institution :
Sch. of Nano & Adv. Mater. Eng., Changwon Nat. Univ., Changwon
Volume :
45
Issue :
6
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
2439
Lastpage :
2441
Abstract :
Nanoparticles of Ce1-xCoxO2 diluted magnetic semiconductors have been prepared by co-precipitation method. Effect of Co substitution has been studied using X-ray diffraction (XRD), transmission electron microscopy (TEM) and DC magnetization measurements. XRD pattern demonstrate that all samples exhibit single phase polycrystalline behavior. The full width at half maximum (FWHM) calculated from XRD pattern has been found to decrease with increase in the Co contents, indicating that particle size decreases with increase in the Co concentration. TEM micrograph reflects the nano-crystalline behavior of all the samples and shows that doping of Co ions hinders growth of the particles. DC magnetization measurements performed at different temperature reveals that Co doped CeO2 exhibits room temperature ferromagnetism.
Keywords :
X-ray diffraction; cerium compounds; cobalt; doping profiles; ferromagnetic materials; magnetisation; nanoparticles; precipitation (physical chemistry); semimagnetic semiconductors; transmission electron microscopy; Ce1-xCoxO2; DC magnetization; TEM; X-ray diffraction; XRD; coprecipitation method; diluted magnetic semiconductors; dopant concentration; full width at half maximum; magnetic properties; nanoparticles; particle size; single phase polycrystalline behavior; structural properties; temperature 293 K to 298 K; transmission electron microscopy; CeO $_{2}$ ; DC magnetization; X-ray diffraction; field emission electron microscopy; spintronics;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2009.2018602
Filename :
4957778
Link To Document :
