Synthesis and Magnetic Properties of Multifunctional Fe3O4-AuPt Core-Shell Nanoparticles

被引：5

作者：

Song, Ah-Young ^{[1
]}

Wu, Jun Hua ^{[2
]}

Min, Ji Hyun ^{[1
]}

Tan, Reasmey P. ^{[1
]}

Lee, Ji Sung ^{[1
]}

Kim, Young Keun ^{[1
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

[2] Korea Univ, Res Inst Engn & Technol, Seoul 136713, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2009年 / 45卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

AuPt; core-shell nanoparticle; ferromagnetic; iron oxide; superparamagnetic; surface plasmon; GOLD NANOPARTICLES; NANOCRYSTALS;

D O I：

10.1109/TMAG.2009.2025667

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper describes the synthesis and magnetic properties of multifunctional Fe3O4-AuPt core-shell nanoparticles. The Fe3O4-AuPt core- shell nanoparticles were synthesized by a one-pot polyol process in two consecutive steps from Fe, Au, and Pt precursors. The structural characterization and property analysis proves the formation of the core- shell nanostructure fusing the multifunctionality in a single entity. The TEM observation shows that the Fe3O4-AuPt core-shell nanoparticles are highly crystalline and uniform in size distribution, with an averaged particle size of similar to 12.5 nm in diameter, whereas the X-ray diffraction patterns provide further substantiation. The surface plasmon resonance arising from the AuPt nano-shell was revealed by UV-vis spectroscopy, while the magnetic measurements by VSM and PPMS demonstrate the well-defined superparamagnetic and/or soft-ferromagnetic behavior of the Fe3O4-AuPt core-shell nanoparticles.

引用

页码：4041 / 4044

页数：4

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