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.

引用

页码：271 / 274

页数：4

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