Morphological alteration and exceptional magnetic properties of air-stable FeCo nanocubes prepared by a chemical reduction method

被引：18

作者：

Chokprasombat, K. ^{[1
]}

Harding, P. ^{[2
]}

Pinitsoontorn, S. ^{[3
]}

Maensiri, S. ^{[1
]}

机构：

[1] Suranaree Univ Technol, Sch Phys, Inst Sci, Nakhon Ratchasima 30000, Thailand

[2] Walailak Univ, Sch Sci, Mol Technol Res Unit, Nakhon Si Thammarat 80161, Thailand

[3] Khon Kaen Univ, Fac Sci, Dept Phys, Khon Kaen 40002, Thailand

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 369卷

关键词：

Magnetic nanoparticle; FeCo nanocube; High saturation magnetization; Air-stable magnetic alloy; NANOPARTICLES; STABILIZATION; NANOALLOYS; ALLOY; CORE;

D O I：

10.1016/j.jmmm.2014.06.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

FeCo nanocubes are of great interest due to their outstanding magnetic properties and larger contact area compared to the spherical particles. Herein, the FeCo nanocubes could be obtained by the reduction of metal ions by hydrazine hydrate under a concentrated basic condition. It was found that shape of the FeCo nanocubes varied from cubic with a mean edge length of 130 +/- 3 nm to polyhedron (diameter around 500-700 nm) depending on the concentration of using polymer. A lot of irregular nanoplates were also obtained when used the excessive polymer. In addition, the as-synthesized particles were air-stable which might be related to the formation of thin polymer shells on particle surfaces. The FeCo nanocubes also possessed exceptional magnetic properties at room temperature, including a very high saturation magnetization (217.14 emu/g) and low coercivity (85.95 Oe). (C) 2014 Elsevier B.V. All rights reserved

引用

页码：228 / 233

页数：6

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