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Comparison of the effects of particle shape on thin FeSiCr electromagnetic wave absorber
- Authors
- Kim, Moon Suk; Min, Eui Hong; Koh, Jae Gui
- Issue Date
- Mar-2009
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Electromagnetic interference (EMI); Electromagnetic compatibility (EMC); FeSiCr particle; Microwave absorber; Complex permittivity; Complex permeability
- Citation
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.321, no.6, pp.581 - 585
- Journal Title
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
- Volume
- 321
- Number
- 6
- Start Page
- 581
- End Page
- 585
- ISSN
- 0304-8853
- Abstract
- The raw materials of FeSiCr were processed in the ball mill for 30 h and the shape of the FeSiCr particles was changed from sphere to. flake type, which was observed using a scanning electron microscope. And FeSiCr composite microwave absorbers were mixed with silicone for mobile phones and the effects of the thickness of the samples on the absorption were measured using a network analyzer in order to investigate the relationship between the microwave absorption and the material constants. The. flake-type FeSiCr-rubber composite showed high reflection loss, which was due to the high complex permittivity and permeability. Also, the matching frequency shifted toward lower frequency range with microwave absorber thickness, and the maximum reflection loss of -8.7 dB was observed in 1.85 GHz for a 1.6 mm thickness. (C) 2008 Elsevier B.V. All rights reserved.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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