Synthesis and Characteristic of NiFe/NiFe2O4 Core-Shell Magnetic Nanocomposite Particles

Jun Hu; Ai Min Chen

doi:10.4028/www.scientific.net/AMR.486.65

Paper Titles

Comparison of Field Emission Performance for Different Diameter Carbon Nanotubes Films
p.47

Effect of Aspect Ratio of MWNTs on the Nano-Mechanical Properties of Epoxy Composites Prepared by Electron Beam Irradiation
p.51

Visible-Light Driven FeS₂ Nanosized Photocatalysts Prepared by Solvothermal Method
p.55

Fabrication of Nanofibers by Low-Voltage Near-Field Electrospinning
p.60

Synthesis and Characteristic of NiFe/NiFe₂O₄ Core-Shell Magnetic Nanocomposite Particles
p.65

Preparation and Crystallization of Nd₂Fe₁₄B/α-Fe Permanent Magnetic Nanomaterial by Mechanical Milling
p.70

Cell Activation and Function Alteration in Rat Livers Induced by Repeated Aluminum Oxide Nanoparticles Exposure
p.75

Size-Dependence of Elasticity of Phosphorus-Doped Silicon Nano-Plates
p.80

Effects of Phosphoryl Choline Grafted Water Soluble Carbon Nanotubes Examined by Different Cytotoxicity Methods in 16-HEB Cells
p.84

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 486Synthesis and Characteristic of NiFe/NiFe2O4...

Synthesis and Characteristic of NiFe/NiFe₂O₄ Core-Shell Magnetic Nanocomposite Particles

Abstract:

NiFe/NiFe₂O₄core-shell bimagnetic nanocomposite particles were successfully synthesized by colloidal chemical method combined with H₂ reduction. The whole structural evolution process has been well studied through analysis of X-ray diffraction patterns and Infrared spectra. It has been found that FeNi alloy concentrated in the ferrite phase. The core/shell structure, a FeNi alloy core surrounded by NiFe₂O₄ spinel oxide shell were verified by X-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM). The influence of post H₂ heat treatment temperature on nanoparticles was investigated. The core-shell NiFe/ NiFe₂O₄ nanoparticles was about 100 nm after reduced at 727 K, The powders exhibited paramagnetic properties and the magnetization was 29.9 emu·g^-1.