Fabrication and microwave absorption of carbon nanotubes/CoFe2O4 spinel nanocomposite -: art. no. 033105

被引：554

作者：

Che, RC

Zhi, CY

Liang, CY

Zhou, XG

机构：

[1] Natl Univ Def Technol, Sch Aerosp & Mat Engn, Key Lab New Ceram Fibers & Composites, Changsha 410073, Peoples R China

[2] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100080, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2165276

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A large-scale carbon nanotube/CoFe2O4 (CNTs/CoFe2O4) spinel nanocomposite has been fabricated by a chemical vapor deposition method using CoFe2O4 nanoparticles as catalysts. A uniform mixture of CNTs and CoFe2O4 nanoparticles was obtained simultaneously. The structure and chemical composition of the product were investigated using various techniques, such as x-ray diffraction, high-resolution transmission electron microscopy, and electron energy loss spectroscopy. It was found that the particles functionalized on CNTs were cubic phase CoFe2O4. Microwave absorption of the CNT/CoFe2O4 nanocomposites at 2-18 GHz is evidently enhanced, as compared with that of both pure CNTs and CoFe2O4 nanoparticles. The enhancement mechanism is discussed based on magnetization hysteresis loop measurement and electromagnetic theory.

引用

页码：1 / 3

页数：3

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