Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9834104 | Journal of Magnetism and Magnetic Materials | 2005 | 7 Pages |
Abstract
In this paper, nanocrystalline FeNi alloy powders with different particle size were prepared by two-step mechanical alloying (MA), the first step of the processes is FeNi nanocrystalline alloying and the second step modifies particle size. As-milled powders were randomly dispersed in paraffin at a weight ratio of 5:1 for microwave complex permeability test and comparision in the frequency range of 0.5-18 GHz. It is observed and discussed that microwave complex permeability is prominently affected by FeNi microstructure and particle size. In this work, Fe0.85Ni0.15 nanocrystalline powders exhibit high value of complex permeability in 1-10 GHz, and the sample with particle size of 2.34 μm possesses the maximum value as μâ²=6.32 at 1.81 GHz, μâ²â²=3.45 at 4.09 GHz. This value may be useful for thin-thickness and wide-band microwave absorber.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
P.H. Zhou, L.J. Deng, J.L. Xie, D.F. Liang, L. Chen, X.Q. Zhao,