Enhanced broadband microwave reflection loss of carbon nanotube ensheathed Ni-Zn-Co-ferrite magnetic nanoparticles

被引：47

作者：

Sarkar, Debarghya ^{[1
]}

Bhattacharya, Alakananda ^{[2
]}

Nandy, Papiya ^{[2
]}

Das, Sukhen ^{[2
]}

机构：

[1] Jadavpur Univ, Dept Elect Engn, Kolkata 700032, India

[2] Jadavpur Univ, Dept Phys, Kolkata 700032, India

来源：

MATERIALS LETTERS | 2014年 / 120卷

关键词：

Nanoferrite; Carbon nanotube; Nanocomposite; Microwave reflection loss; ABSORPTION;

D O I：

10.1016/j.matlet.2014.01.089

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ni-Zn-Co-ferrite (NZCoF) nanoparticles prepared by sol-gel method were ensheathed in multi-walled carbon nanotubes (MWCNT) to form the desired composite NZCoF-CNT. Magnetization curves of samples indicate presence of mixed state of superparamagnetism and ferrimagnetism, with the composite indicating significant retention of magnetic behavior of NZCoF despite presence of non-magnetic MWCNT. Microwave frequency reflection loss of the samples was measured, and absorption is evidently enhanced in NZCoF-CNT, compared to that of NZCoF. A consolidated theoretical explanation has been proposed explaining enhanced microwave absorption in present and similar previous works. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：259 / 262

页数：4

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