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Investigation of the microwave absorptive behavior of doped barium ferrites

✍ Scribed by Ali Ghasemi; Ardeshir Hossienpour; Akimitsu Morisako; Xiaoxi Liu; Azadeh Ashrafizadeh

Book ID
104043233
Publisher
Elsevier Science
Year
2008
Weight
507 KB
Volume
29
Category
Article
ISSN
0261-3069

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✦ Synopsis

Doped ferrites were fabricated by usual ceramic sintering method. The ferrite powders possess hexagonal shape and are well separated from one another. X-ray diffraction (XRD), scanning electron microscope (SEM), vector network analyzer and a.c. susceptometer were used to analyze structures, electromagnetic and microwave absorption properties of prepared ferrites. The results showed that the magnetoplumbite structures for all the samples have been formed. Also the present investigation demonstrates that microwave absorber using BaFe 9 Mn 1.5 Ti 1.5 O 19 /polyvinylchloride can be fabricated for the applications over 15 GHz, with reflection loss more than Γ€25 dB for specific frequencies, by controlling the molar ratio of the substituted ions.

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✍ Ghasemi, A. ;Saatchi, A. ;Salehi, M. ;Hossienpour, A ;Morisako, A. ;Liu, X. πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 413 KB

## Abstract The development and characterization of hexagonal ferrite powders of BaFe~9~Mn~1.5~Ti~1.5~O~19~, BaFe~9~Mn~1.5~Co~1.5~O~19~, and BaFe~9~Ti~1.5~Co~1.5~O~19~ as the microwave absorbers have been investigated. The ferrites were fabricated by conventional ceramic technology. The developed f