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
收藏
页码：4041 / 4044
页数：4
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