Synthesis of High Magnetic Moment CoFe Nanoparticles via Interfacial Diffusion in Core/Shell Structured Co/Fe Nanoparticles

被引：84

作者：

Wang, Chao ^{[1
]}

Peng, Sheng ^{[1
]}

Lacroix, Lise-Marie ^{[1
]}

Sun, Shouheng ^{[1
]}

机构：

[1] Brown Univ, Dept Chem, Providence, RI 02912 USA

来源：

NANO RESEARCH | 2009年 / 2卷 / 05期

关键词：

CoFe nanoparticles; core/shell nanoparticles; magnetic nanoparticles; chemical synthesis; FEPT NANOPARTICLES; FECO NANOPARTICLES; SUPERLATTICES; STABILIZATION;

D O I：

10.1007/s12274-009-9037-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the synthesis of high magnetic moment CoFe nanoparticles via the diffusion of Co and Fe in core/ shell structured Co/Fe nanoparticles. In an organic solution, Co nanoparticles were coated with a layer of Fe to form a Co/Fe core/shell structure. Further raising the solution temperature led to inter-diffusion of Co and Fe and formation of CoFe alloy nanoparticles. These nanoparticles have high saturation magnetization of up to 192 emu/g CoFe and can be further stabilized by thermal annealing at 600 degrees C.

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页码：380 / 385

页数：6

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