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Title: Dielectric and magnetic properties of NiCuZn ferrite coated Sendust flakes through a sol-gel approach
Authors: Yang, Z.H. 
Li, Z.W. 
Yang, Y.H.
Liu, L.
Kong, L.B.
Keywords: Complex permeability
Complex permittivity
Microwave attenuation
Sendust flake
Sol-gel approach
Vacuum infiltration method
Issue Date: Apr-2013
Citation: Yang, Z.H., Li, Z.W., Yang, Y.H., Liu, L., Kong, L.B. (2013-04). Dielectric and magnetic properties of NiCuZn ferrite coated Sendust flakes through a sol-gel approach. Journal of Magnetism and Magnetic Materials 331 : 232-236. ScholarBank@NUS Repository.
Abstract: Sendust flakes (with 9.59% Si, 5.88% Al and balanced Fe) were coated with NiCuZn ferrite nanoparticles by using a simple sol-gel approach. Both the coated and uncoated flakes were characterized by using scanning electron microscopy, X-ray diffraction and vibrating sample magnetometer. Composites made from the Sendust flakes with the in-plane alignment were fabricated via a vacuum infiltration method. Microwave measurement results indicated that permittivity of the composite made of the coated Sendust flakes was remarkably reduced, with a slight decrease in permeability over 0.1-8.55 GHz. Consequently, the sample with a thickness of 6 mm showed reflection loss exceeding -20 dB at 1.4 GHz, while reflection loss of the composite derived from the uncoated Sendust flakes could not reach -10 dB at the same sample thickness. Therefore, the Sendust flakes coated with NiCuZn ferrite nanoparticles could be promising candidates to develop microwave attenuation materials. © 2012 Elsevier B.V. All rights reserved.
Source Title: Journal of Magnetism and Magnetic Materials
ISSN: 03048853
DOI: 10.1016/j.jmmm.2012.11.006
Appears in Collections:Staff Publications

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