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Microwave-absorbing characteristics of NiCoZn ferrite prepared by using a co-precipitation method
- Authors
- Kim, Moon Suk; Koh, Jae Gui
- Issue Date
- Aug-2008
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- electromagnetic interference (EMI); microwave absorber; ferrite; co-precipitation
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.53, no.2, pp.737 - 741
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 53
- Number
- 2
- Start Page
- 737
- End Page
- 741
- ISSN
- 0374-4884
- Abstract
- In this work, we prepared NiCoZn ferrites by using co-precipitation and we investigated the effects of cobalt content, sintering temperature and absorber thickness on electromagnetic wave absorption properties of sheet-type NiCoZn ferrite microwave absorbers. From an analysis of the X-ray diffraction patterns, we could see that all the particles had only a single phase spinel structure. The initial permeability of NiCoZn ferrite powder after sintering at 1250 degrees C was the lowest. In the MHz range, the Q factor of (Ni0.4Co0.1Zn0.5)Fe2O4 was higher than that for any other cobalt content. Also, a great reduction in absorption was evident for a 2-nim-thick NiCoZn ferrite-rubber composite absorber.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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