Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
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. |
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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 |