Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23260
Title: Synthesis and electromagnetic properties of Al/AlOx-coated Ni nanocapsules
Authors: Liu, X
Feng, C
Or, SW 
Jin, C
Xiao, F
Xia, A
Li, W
Sun, Y
Zhao, S
Issue Date: 2013
Source: Materials research bulletin, 2013, v. 48, no. 10, p. 3887-3891
Abstract: 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.
Keywords: Composites
Nanostructures
X-ray diffraction
Dielectric properties
Publisher: Pergamon Press
Journal: Materials research bulletin 
ISSN: 0025-5408
DOI: 10.1016/j.materresbull.2013.05.110
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