Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites

Detalhes bibliográficos
Autor(a) principal: Caffarena,Valeska da Rocha
Data de Publicação: 2008
Outros Autores: Capitaneo,Jefferson Leixas, Ogasawara,Tsuneharu, Pinho,Magali Silveira
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=S1516-14392008000300017
Resumo: The magnetic behavior and its relationship with microwave absorbing properties have been investigated for doped Z-type barium hexaferrites (Ba3Co1.3Zn0.3Cu0.4Fe 24O41)/ polychloroprene (CR) nanocomposites. Simultaneous substitutions by Co2+, Cu2+, and Zn2+ ions make possible the use of these materials as RAMs, due to the frequency dependence of µr* (permeability), responsible for the location of the hexaferrite natural resonance. The Cu2+ ions distort the crystalline field due to their electronic configuration, and this behavior results in an increase in the saturation magnetization (Ms), which improve the magnetic permeability. Similarly, the superparamagnetic contribution (associated to the nanometric size) led to the improvement of the microwave absorption.
id ABMABCABPOL-1_ebfbb3d550803cf165a9861f404a3f3b
oai_identifier_str oai:scielo:S1516-14392008000300017
network_acronym_str ABMABCABPOL-1
network_name_str Materials research (São Carlos. Online)
repository_id_str
spelling Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocompositesZ-type hexaferriteradar absorption materialpermittivitypermeabilitymagnetic propertiesThe magnetic behavior and its relationship with microwave absorbing properties have been investigated for doped Z-type barium hexaferrites (Ba3Co1.3Zn0.3Cu0.4Fe 24O41)/ polychloroprene (CR) nanocomposites. Simultaneous substitutions by Co2+, Cu2+, and Zn2+ ions make possible the use of these materials as RAMs, due to the frequency dependence of µr* (permeability), responsible for the location of the hexaferrite natural resonance. The Cu2+ ions distort the crystalline field due to their electronic configuration, and this behavior results in an increase in the saturation magnetization (Ms), which improve the magnetic permeability. Similarly, the superparamagnetic contribution (associated to the nanometric size) led to the improvement of the microwave absorption.ABM, ABC, ABPol2008-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392008000300017Materials Research v.11 n.3 2008reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392008000300017info:eu-repo/semantics/openAccessCaffarena,Valeska da RochaCapitaneo,Jefferson LeixasOgasawara,TsuneharuPinho,Magali Silveiraeng2008-10-29T00:00:00Zoai:scielo:S1516-14392008000300017Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2008-10-29T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
title Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
spellingShingle Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
Caffarena,Valeska da Rocha
Z-type hexaferrite
radar absorption material
permittivity
permeability
magnetic properties
title_short Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
title_full Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
title_fullStr Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
title_full_unstemmed Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
title_sort Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
author Caffarena,Valeska da Rocha
author_facet Caffarena,Valeska da Rocha
Capitaneo,Jefferson Leixas
Ogasawara,Tsuneharu
Pinho,Magali Silveira
author_role author
author2 Capitaneo,Jefferson Leixas
Ogasawara,Tsuneharu
Pinho,Magali Silveira
author2_role author
author
author
dc.contributor.author.fl_str_mv Caffarena,Valeska da Rocha
Capitaneo,Jefferson Leixas
Ogasawara,Tsuneharu
Pinho,Magali Silveira
dc.subject.por.fl_str_mv Z-type hexaferrite
radar absorption material
permittivity
permeability
magnetic properties
topic Z-type hexaferrite
radar absorption material
permittivity
permeability
magnetic properties
description The magnetic behavior and its relationship with microwave absorbing properties have been investigated for doped Z-type barium hexaferrites (Ba3Co1.3Zn0.3Cu0.4Fe 24O41)/ polychloroprene (CR) nanocomposites. Simultaneous substitutions by Co2+, Cu2+, and Zn2+ ions make possible the use of these materials as RAMs, due to the frequency dependence of µr* (permeability), responsible for the location of the hexaferrite natural resonance. The Cu2+ ions distort the crystalline field due to their electronic configuration, and this behavior results in an increase in the saturation magnetization (Ms), which improve the magnetic permeability. Similarly, the superparamagnetic contribution (associated to the nanometric size) led to the improvement of the microwave absorption.
publishDate 2008
dc.date.none.fl_str_mv 2008-09-01
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=S1516-14392008000300017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392008000300017
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392008000300017
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.11 n.3 2008
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
_version_ 1754212658942312448

Registros relacionados