Interface structures in FePt/Fe3Pt hard-soft exchange-coupled magnetic nanocomposites

被引：43

作者：

Li, J

Wang, ZL ^{[1
]}

Zeng, H

Sun, SH

Liu, JP

机构：

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

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

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

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 21期

关键词：

D O I：

10.1063/1.1578515

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Self-assembly of FePt and Fe3O4 nanoparticles of different sizes led to various FePt-Fe3O4 nanocomposites. Annealing the composite under reducing atmosphere at 650 and 700degreesC induced magnetically hard FePt phase and magnetically soft Fe3Pt phase. The FePt and Fe3Pt phases were either linked by a common interface or coexisted within one grain as domains with sizes <10 nm. This ensures the effective exchange coupling of magnetically hard and soft phases. High-resolution transmission electron microscopy studies provide detailed structural characterization for the FePt based nanocomposites. (C) 2003 American Institute of Physics.

引用

页码：3743 / 3745

页数：3

共 6 条

[1]

Buseck P., 1989, HIGH RESOLUTION TRAN

[2] THE EXCHANGE-SPRING MAGNET - A NEW MATERIAL PRINCIPLE FOR PERMANENT-MAGNETS [J].