Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies
The complex dielectric permittivity (ε) and magnetic permeability (µ) of Radar Absorbing Materials (RAM) based on magnetic particles (MnZn ferrite particles) embedded in a dielectric matrix (silicon rubber) have been studied in the frequency range of 2 to 18 GHz. The relative perme...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2013-01-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013005000077 |
| _version_ | 1818862850475556864 |
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| author | Adriana Medeiros Gama Mirabel Cerqueira Rezende |
| author_facet | Adriana Medeiros Gama Mirabel Cerqueira Rezende |
| author_sort | Adriana Medeiros Gama |
| collection | DOAJ |
| description | The complex dielectric permittivity (ε) and magnetic permeability (µ) of Radar Absorbing Materials (RAM) based on magnetic particles (MnZn ferrite particles) embedded in a dielectric matrix (silicon rubber) have been studied in the frequency range of 2 to 18 GHz. The relative permeability and permittivity of MnZn ferrite-silicon composites for various mass fractions are measured by the transmission/reflection method using a vector network analyzer. The concentration dependence of permittivity and permeability on the evaluated frequency range is analyzed. In a general way, the results show ε' parameter presenting more significant variation among the evaluated parameters (ε", µ", µ'). The comparison of dielectric and magnetic loss tangents (ε"/ε' and µ"/µ', respectively) shows more clearly the variation of both parameters (ε and µ) according to the frequency. It is also observed that higher MnZn ferrite content fractions favor both dielectric and magnetic loss tangents. |
| first_indexed | 2024-12-19T10:06:25Z |
| format | Article |
| id | doaj.art-8c66151abc2448cf8d8ce027e8a41174 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-19T10:06:25Z |
| publishDate | 2013-01-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-8c66151abc2448cf8d8ce027e8a411742022-12-21T20:26:29ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392013-01-01ahead0Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequenciesAdriana Medeiros GamaMirabel Cerqueira RezendeThe complex dielectric permittivity (ε) and magnetic permeability (µ) of Radar Absorbing Materials (RAM) based on magnetic particles (MnZn ferrite particles) embedded in a dielectric matrix (silicon rubber) have been studied in the frequency range of 2 to 18 GHz. The relative permeability and permittivity of MnZn ferrite-silicon composites for various mass fractions are measured by the transmission/reflection method using a vector network analyzer. The concentration dependence of permittivity and permeability on the evaluated frequency range is analyzed. In a general way, the results show ε' parameter presenting more significant variation among the evaluated parameters (ε", µ", µ'). The comparison of dielectric and magnetic loss tangents (ε"/ε' and µ"/µ', respectively) shows more clearly the variation of both parameters (ε and µ) according to the frequency. It is also observed that higher MnZn ferrite content fractions favor both dielectric and magnetic loss tangents.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013005000077MnZn ferritesiliconpermeabilitypermittivityRadar Absorbing MaterialsRAM |
| spellingShingle | Adriana Medeiros Gama Mirabel Cerqueira Rezende Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies Materials Research MnZn ferrite silicon permeability permittivity Radar Absorbing Materials RAM |
| title | Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies |
| title_full | Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies |
| title_fullStr | Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies |
| title_full_unstemmed | Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies |
| title_short | Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies |
| title_sort | complex permeability and permittivity variation of radar absorbing materials based on mnzn ferrite in microwave frequencies |
| topic | MnZn ferrite silicon permeability permittivity Radar Absorbing Materials RAM |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013005000077 |
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