Please use this identifier to cite or link to this item:
Title: Synthesis and characterizations of Ni-Fe@spinel oxide core-shell nanoparticles
Authors: Zhang, H.T. 
Ding, J. 
Chow, G.M. 
Keywords: A. Magnetic materials
A. Nanostructures
B. Chemical synthesis
D. Magnetic properties
Issue Date: 6-May-2009
Source: Zhang, H.T., Ding, J., Chow, G.M. (2009-05-06). Synthesis and characterizations of Ni-Fe@spinel oxide core-shell nanoparticles. Materials Research Bulletin 44 (5) : 1195-1199. ScholarBank@NUS Repository.
Abstract: Core-shell Ni-Fe@ferrite nanoparticles with an average diameter of 14 nm and shell thickness of 3 nm were synthesized through a redox-transmetalation process. The alloy core and spinel oxide shell were verified by X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy. The hydrophobic oleylamine molecules on the surface were replaced by hydrophilic meso-2,3-Dimercaptosuccinic acid to make the nanoparticles to be water-soluble. X-ray diffraction study of the as-prepared core-shell nanoparticles indicates that they remained face centered cubic alloy core and spinel shell form in air. Magnetic measurements indicate that the core-shell nanoparticles exhibit superparamagnetic and exchange bias characteristics at 300 K and 5 K, respectively. © 2008 Elsevier Ltd. All rights reserved.
Source Title: Materials Research Bulletin
ISSN: 00255408
DOI: 10.1016/j.materresbull.2008.09.042
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 6, 2018


checked on Mar 6, 2018

Page view(s)

checked on Feb 25, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.