Controlled synthesis, structure and magnetic properties of Fe1-xNix alloy nanoparticles attached on carbon nanotubes

被引：52

作者：

Wu, HQ ^{[1
]}

Cao, YJ ^{[1
]}

Yuan, PS ^{[1
]}

Xu, HY ^{[1
]}

Wei, XW ^{[1
]}

机构：

[1] Anhui Normal Univ, Anhui Key Lab Funct Mol Solids, Coll Chem & Mat Sci, Wuhu 241000, Anhui, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 406卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.cplett.2005.02.117

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fel(1-x)Ni(x) alloy nanoparticles (x = 0.25, 0.50, 0.75), with diameters in the range of 12-15 nm were uniformly attached on the surface of carbon nanotubes by wet chemistry, which were characterized by transmission electron microscopy, high-resolution transmission electron microscopy and X-ray powder diffraction. When x = 0.25, fcc and bcc structure coexist obviously, while when x = 0.50, 0.75, most of Fe1-xNix alloy nanoparticles have fcc structure. Fe1-xNix alloy nanoparticles attached on carbon nanotubes have soft magnetic in nature, and the coercivity decreases with increasing Ni concentration and with decreasing the nanoparticles size, the saturation magnetization varies with the Ni concentration changes. These demonstrate that the chemical method here is promising for fabricating Fe-Ni alloy nanoparticles coated on carbon nanotubes for magnetic storage applications. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：148 / 153

页数：6

共 29 条

[1] Decoration of activated carbon nanotubes with copper and nickel [J].