Bimagnetic core/shell FePt/Fe3O4 nanoparticles

被引：505

作者：

Zeng, H

Li, J

Wang, ZL

Liu, JP

Sun, SH ^{[1
]}

机构：

[1] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA

[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[3] Univ Texas, Dept Phys, Arlington, TX 76019 USA

来源：

NANO LETTERS | 2004年 / 4卷 / 01期

关键词：

D O I：

10.1021/nl035004r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bimagnetic core/shell Fe58Pt42/Fe3O4 nanoparticles are synthesized from high-temperature solution phase coating of 4 nm Fe58Pt42 core with Fe3O4 shell. The shell is tunable from 0.5 to 3 nm. Magnetic properties of the as-synthesized core/shell particles are dependent on shell thickness due to the exchange coupling between core and shell. Upon reductive annealing, an assembly of the core/shell nanoparticles is transformed into a hard magnetic nanocomposite with enhanced energy product.

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收藏

页码：187 / 190

页数：4

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