Colloidal synthesis of NixPt1-x nanoparticles with tuneable composition and size

被引：105
作者：
Ahrenstorf, Kirsten
Albrecht, Ole
Heller, Hauke
Kornowski, Andreas
Gorlitz, Detlef
Weller, Horst
机构：
[1] Univ Hamburg, Inst Phys Chem, D-20146 Hamburg, Germany
[2] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany
[3] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany
来源：
SMALL | 2007年 / 3卷 / 02期
关键词：
magnetic materials; magnetic properties; nanoparticles; nickel; platinum;
D O I：
10.1002/smll.200600486
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A synthesis route for spherical NixPt1-x nanoparticles, whereby the composition and size of the particles are tuneable, is presented. NixPt1-x nanoparticles were synthesized by the reduction of nickel(II) acetate and Pt(acac)2 in the presence of oleic acid, oleylamine, and 1,2-hexadecanediol at 200°C. The combination of hexadecylamine (HCA) and ACA led to star-shaped agglomerates with a size of ≅50 nm. The magnetic properties of NixPt1-x nanoparticles are investigated superconducting quantum interference device (SQUID) measurements. The superparamagnetic behavior of Ni50Pt 50 nanoparticles are found by using zero-field cooling (ZFC) in an applied field of 1kOe. The composition of the particles depends on the initial Ni:Pt ratio and is tuneable over a wide range.
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收藏
页码：271 / 274
页数：4
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