Synthesis and electromagnetic properties of Al/AlOx-coated Ni nanocapsules

被引：31

作者：

Liu, Xianguo ^{[1
]}

Feng, Chao ^{[1
]}

Or, Siu Wing ^{[2
]}

Jin, Chuangui ^{[1
]}

Xiao, Feng ^{[1
]}

Xia, Ailin ^{[1
]}

Li, Weihuo ^{[1
]}

Sun, Yuping ^{[3
]}

Zhao, Shengsheng ^{[4
]}

机构：

[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China

[2] Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

[3] Anhui Univ Technol, Ctr Engn Practice & Innovat Educ, Maanshan 243002, Peoples R China

[4] Shenzhen Polytech, Sch Mech & Elect Engn, Shenzhen 518055, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Composites; Nanostructures; X-ray diffraction; Dielectric properties; MICROWAVE-ABSORPTION; FERRITE COMPOSITES; NANOCOMPOSITES; ABSORBER; RANGE; BAND; XPS;

D O I：

10.1016/j.materresbull.2013.05.110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ni nanocapsules with a core of Ni nanoparticle and a shell of amorphous Al/AlOx have been prepared by the arc discharge method. The natural resonance in the Al/AlOx-coated Ni nanocapsules shifts to 6.4 GHz, due to the surface anisotropy of Ni nanoparticles. An optimal RL value of -40.96 dB was observed at 9.2 GHz on a specimen with a matching thickness of 2.40 mm. Theoretical simulation for the microwave absorption using the transmission line theory agrees reasonably well with the experimental results. The frequency of microwave absorption complies with the quarter-wavelength matching model. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：3887 / 3891

页数：5

共 34 条

[1] Microwave absorption properties and mechanism of cagelike ZnO/SiO2 nanocomposites [J].