Synthesis and Structure of Magnetic Core-shell NiCe Nanocomposite Particles
Source: Journal of Nanoparticle Research, Volume 3, Number 4, August 2001 , pp. 325-328(4)
A new type of magnetic core-shell NiCe nanocomposite particles (1550 nm) is presented. SEM observations suggest the particles are strongly ferromagnetic, interacting with ordered chain-like features. Typical HR-TEM images demonstrate that many planar defects (nanotwins and stacking faults) exist in the surface shell and large Ni core zone (1040 nm) of the particles; the inner shell layers (46 nm) consist of NiCe alloy and the outermost shell is NiO. Nano-diffraction patterns show an indication of well-defined spots characteristic of nanocomposite materials, of which certain crystal facet orientation relationships between orthorhombic  of NiCe and cubic  of Ni_2Ce, face-center crystal  of NiO, cubic  of nickel have been identified. This confirms the nature of this core-shell nanocomposite particle.
Document Type: Regular paper
Affiliations: 1: Prog. Simulación Molecular, Instituto Mexican Del Petróleo (IMP), Lázaro Cárdenas 152, 07730, México D.F., México (Fax: +525-333-6239; E-mail: firstname.lastname@example.org) 2: Research Center Of Nano-meter Material, Qingdao Institute Of Chemical Technology, 266042 Qingdao, P.R. China
Publication date: 2001-08-01