Cobalt microtrees assembled by dendrites: Hydrothermal synthesis and their enhanced magnetic properties

被引：9

作者：

Chen, Huiyu ^{[1
,2
]}

Zhou, Ruihua ^{[1
,2
]}

Xu, Chunju ^{[1
,2
]}

Liu, Yaqing ^{[1
,2
]}

Zhao, Guizhe ^{[1
,2
]}

机构：

[1] North Univ China, Res Ctr Engn Technol Polymer Composites Shanxi Pr, Taiyuan 030051, Peoples R China

[2] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 99卷

关键词：

Metals and alloys; Cobalt microtrees; Dendritic; Hydrothermal; Crystal growth; REDUCTION ROUTE; TEMPLATE; SUPERLATTICES; NANOPARTICLES; CO;

D O I：

10.1016/j.matlet.2013.02.063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cobalt microtrees assembled by many dendrites were hydrothermally synthesized at 160 degrees C using hydrazine as the reducing agent. No surfactant or complex reagent was employed for the growth assistance. The structure and morphologies of the obtained products were investigated by XRD, SEM, and TEM techniques. It was found that temperature and concentration of sodium hydroxide played important roles for the formation of cobalt with such novel shapes. The growth mechanism was tentatively discussed on the basis of controlled experiments. Magnetization measurement revealed that the cobalt microtrees exhibited ferromagnetic characteristics with a saturation magnetization of 146.7 emu/g and an enhanced coercivity of 259.0 Oe at room temperature. These cobalt microtrees may have potential applications in magnetic devices. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：1 / 4

页数：4

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