Influence of matching thickness on the absorption properties of doped barium ferrites at microwave frequencies

被引：17
作者：
Ghasemi, A [1 ]
Saatchi, A
Salehi, M
Hossienpour, A
Morisako, A
Liu, X
机构：
[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan, Iran
[2] Malek Ashtar Univ Technol, Electroceram Res Ctr, Shahin Shahr, Iran
[3] Shiraz Univ, Dept Mat Engn, Shiraz, Iran
[4] Shinshu Univ, Dept Informat Engn, Nagano, Japan
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2006年 / 203卷 / 02期
关键词：
D O I：
10.1002/pssa.200521143
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The development and characterization of hexagonal ferrite powders of BaFe9Mn1.5Ti1.5O19, BaFe9Mn1.5Co1.5O19, and BaFe9Ti1.5Co1.5O19 as the microwave absorbers have been investigated. The ferrites were fabricated by conventional ceramic technology. The developed ferrite powders 80% by weight were mixed with polyvinylchloride plasticizer and fired to form rubber-ferrite with the thickness of 1.5 mm, 2 mm and 2.5 mm. XRD was used to identify structures of the samples. The magnetoplumbite structures for all the samples have been formed. Vibrating sample magnetometer was used to determine the hysteresis loops of barium ferrite and BaFe9Mn1.5Ti1.5O19 at room temperature. The vector network analyzers in the frequency range of 12 to 20 GHz have measured the reflection loss properties of rubber-ferrite. It was concluded that BaFe9Mn1.5Ti1.5O19 with thickness of 2 mm could be designed as a wide-band microwave absorber. By SEM, the size and morphology of grains in BaFe9Mn1.5Ti1.5O19 ferrite were examined. The results showed that ferrite with grain size of 5 mu m do not have any impurities. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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页码：358 / 365
页数：8
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