Document Type
Article
Original Publication Date
2011
Journal/Book/Conference Title
Journal of Applied Physics
Volume
109
Issue
7
DOI of Original Publication
10.1063/1.3548828
Date of Submission
October 2015
Abstract
Iron-based nanoparticles are the forerunners in the field of nanotechnology due to their high magnetizationsaturation and biocompability which affords them use in a variety of applications. However, iron-based nanoparticles, due to a high surface-to-volume ratio, suffer from oxidation and limit its practicality by lowering the magnetic moment significantly. To avoid this oxidation, the surfaces of the particles have to be passivated. One such way to accomplish this passivation is to synthesize core@shell nanoparticles that have a surface treatment of chromium or nickel. These core@shell nanoparticles have been synthesized using a reverse micelle technique. The Cr and Ni passivated ironnanoparticles were characterized by x-ray diffraction, transmission electron microscopy, vibrating sample magnetometry, and x-ray photoelectron spectroscopy to determine their phase, morphology, surface properties, and magnetizationsaturation. A high magnetizationsaturation of 160 and 165 emu/g for Cr and Ni passivated iron core@shell nanoparticles was achieved.
Rights
Naik, S. H., Carroll, K. J., & Carpenter, E. E. Characterization of oxidation resistant Fe@M (M=Cr, Ni) core@shell nanoparticles prepared by a modified reverse micelle reaction. Journal of Applied Physics, 109, 07B519 (2011). Copyright © 2011 American Institute of Physics.
Is Part Of
VCU Chemistry Publications
Comments
Originally published at http://dx.doi.org/10.1063/1.3548828