Microwave Charecterization of Co-Doped Barium Hexaferrite Absorber Metarial

Co-doped BaFe 11 CoO 19 barium hexaferrites were prepared with the standard sintering technique generally used for microwave absorber materials. In this work, XRD was used to identify the structure of the synthesized sample, vibrating sample magnetometer was used to obtain magnetic hysteresis loop o...

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Bibliographic Details
Published inJournal of superconductivity and novel magnetism Vol. 29; no. 6; pp. 1545 - 1550
Main Author Araz, İsa
Format Journal Article
LanguageEnglish
Published New York Springer US 01.06.2016
Subjects
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Original Paper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
Microwave absorption
Complex permeability
Reflection loss
Complex permittivity
Ceramic technology
Magnetic properties
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Summary:Co-doped BaFe 11 CoO 19 barium hexaferrites were prepared with the standard sintering technique generally used for microwave absorber materials. In this work, XRD was used to identify the structure of the synthesized sample, vibrating sample magnetometer was used to obtain magnetic hysteresis loop of sample, and scanning electron microscopy was used to study its surface morphology. The complex permeability and complex permittivity were measured with an automated commercial measurement set up in the 18–26.5-GHz frequency range using the Nicolson-Ross-Weir (NRW) method. A domain wall resonance was detected around 19 GHz, and the maximum reflection loss value in the domain wall resonance region was found to be 18.3 dB, the minimum reflection loss value was found to be 14.5 dB. Co-doped BaFe 11 CoO 19 barium hexaferrites seem to be a good candidate as a microwave absorber. The synthesis procedure and the measurement results are presented below.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-016-3447-9