One-step synthesis of FePt nanoparticles with tunable size

被引：336

作者：

Chen, M

Liu, JP

Sun, SH ^{[1
]}

机构：

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

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

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 27期

关键词：

D O I：

10.1021/ja047648m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A one-step synthesis of FePt nanoparticles is reported. The size, composition, and shape of the particles are controlled by varying the synthetic parameters such as molar ratio of stabilizers to metal precursor, addition sequence of the stabilizers and metal precursors, heating rate, heating temperature, and heating duration. An assembly of large (6 nm or greater) FePt nanoparticles, especially oxide-coated FePt nanoparticles, can sustain higher temperature (up to 650 °C) annealing without noticeable particle sintering. Room temperature coercivity of an assembly containing discrete FePt dots can reach as high as 1.3 T, a value that is suitable for hard magnetic applications. Copyright © 2004 American Chemical Society.

引用

页码：8394 / 8395

页数：2

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