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

被引：0

作者：

Hu, Jun ^{[1
]}

Chen, Aimin ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Chem Engn & Mat Sci, Hangzhou 310014, Zhejiang, Peoples R China

来源：

NANOTECHNOLOGY AND ADVANCED MATERIALS | 2012年 / 486卷

关键词：

Soft magnetic materials; Nanocomposites; NiFe/NiFe2O4; Core-shell; NICKEL FERRITE; NANOPARTICLES;

D O I：

10.4028/www.scientific.net/AMR.486.65

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

NiFe/NiFe2O4 core-shell bimagnetic nanocomposite particles were successfully synthesized by colloidal chemical method combined with H-2 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 H-2 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).

引用

页码：65 / 69

页数：5

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