Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies

Detalhes bibliográficos
Autor(a) principal: Gama,Adriana Medeiros
Data de Publicação: 2013
Outros Autores: Rezende,Mirabel Cerqueira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500006
Resumo: 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.
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spelling Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequenciesMnZn ferritesiliconpermeabilitypermittivityRadar Absorbing MaterialsRAMThe 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.ABM, ABC, ABPol2013-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500006Materials Research v.16 n.5 2013reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392013005000077info:eu-repo/semantics/openAccessGama,Adriana MedeirosRezende,Mirabel Cerqueiraeng2013-10-18T00:00:00Zoai:scielo:S1516-14392013000500006Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2013-10-18T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies
title Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies
spellingShingle Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies
Gama,Adriana Medeiros
MnZn ferrite
silicon
permeability
permittivity
Radar Absorbing Materials
RAM
title_short 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_sort Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies
author Gama,Adriana Medeiros
author_facet Gama,Adriana Medeiros
Rezende,Mirabel Cerqueira
author_role author
author2 Rezende,Mirabel Cerqueira
author2_role author
dc.contributor.author.fl_str_mv Gama,Adriana Medeiros
Rezende,Mirabel Cerqueira
dc.subject.por.fl_str_mv MnZn ferrite
silicon
permeability
permittivity
Radar Absorbing Materials
RAM
topic MnZn ferrite
silicon
permeability
permittivity
Radar Absorbing Materials
RAM
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.
publishDate 2013
dc.date.none.fl_str_mv 2013-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392013005000077
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.16 n.5 2013
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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