Title :
Room Temperature Ferromagnetism of FeCo-Codoped ZnO Nanorods Prepared by Chemical Vapor Deposition
Author :
Chen, Jiajun ; Liu, Jingjing ; West, Amber ; Yan, Yanfa ; Yu, Minghui ; Zhou, Weilie
Author_Institution :
Adv. Mater. Res. Inst., Univ. of New Orleans, New Orleans, LA
Abstract :
FeCo-codoped ZnO nanorods with room temperature ferromagnetic ordering have been synthesized by chemical vapor deposition. Detailed nanostructures were investigated by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and nanoprobe X-ray energy dispersive spectroscopy (EDS). The ZnO nanorods were grown along c-axis of a single crystalline wurtzite structure and no second phase was observed by high resolution TEM. EDS analysis along the nanowires indicated that Co and Fe were successfully doped into the ZnO lattice with concentrations about 0.6-1.0 at.%. Magnetic measurement demonstrates a ferromagnetic ordering with Curie temperature higher than 300 K presents in the ZnO nanorods.
Keywords :
Curie temperature; II-VI semiconductors; chemical vapour deposition; cobalt; ferromagnetic materials; field emission electron microscopy; iron; nanotechnology; nanowires; scanning electron microscopy; semiconductor doping; semiconductor growth; semiconductor quantum wires; semimagnetic semiconductors; transmission electron microscopy; wide band gap semiconductors; zinc compounds; Curie temperature; EDS analysis; FESEM; ZnO:Fe,CO; chemical vapor deposition; codoping; crystalline wurtzite structure; diluted magnetic semiconductors; field emission scanning electron microscopy; high resolution TEM; magnetic measurement; nanoprobe X-ray energy dispersive spectroscopy; nanorods preparation; nanostructures; nanowires; room temperature ferromagnetic ordering; semiconductor growth; transmission electron microscopy; CVD; diluted magnetic semiconductor; ferromagnetism; nanostructure;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2008.2003037
