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Preparation and Electromagnetic Properties of an Electromagnetic Wave Absorber

Journal of Magnetics, Volume 21, Number 1, 31 Mar 2016, Pages 61-64

Sun Chang *

(Co-Innovation Center of Green Building, Shandong Jianzhu University), Sun Kangning (Engineering Ceramics Key Laboratory of Shandong Province, Shandong University), Pang Laixue (Research Center for Road Safety, Emergency, Disaster Reduction Technology, Shandong Jiaotong University), Liu Jian (School of Material Science and Engineering, Shandong Jianzhu University)

Abstract

In this study, we report the as-prepared MgO-doped BaFe₁₂O₁₉, which was prepared by calcination technique and high-energy ball milling process, as an electromagnetic wave absorber. The phase analysis of BaFe12O19 and the as-prepared MgO-doped BaFe₁₂O₁₉ was detected utilizing X-ray Diffractometer (XRD). The microstructure was characterized using Scanning Electron Microscope (SEM). By means of the transmission/ reflection coaxial line method, the electromagnetic properties and microwave absorbing properties of the asprepared electromagnetic wave absorber were studied. It is found that the electromagnetic wave absorber has a minimum reflection loss value of –41 dB at 4.27 GHz with a matching thickness of 2.6 mm. The experiment results revealed that the as-prepared electromagnetic wave absorber could find potential applications in many military as well as commercial industries.

Keywords: MgO-doped BaFe12O19; microwave absorbing properties; microwave absorber

DOI: http://dx.doi.org/10.4283/JMAG.2016.21.1.061

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