Publicação
Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites
| Resumo: | Particulate composite films of poly(vinylidene fluoride) and CoFe2O4 and NiFe2O4 ferrites were prepared from solvent casting and melt processing. The well dispersed ferrite nanoparticles nucleate the piezoelectric -phase of the polymer, but the different ferrites nucleate the whole polymer crystalline phase at different filler concentrations. The macroscopic magnetic and dielectric response of the composites demonstrates a strong dependence on the volume fraction of ferrite nanoparticles, with both magnetization and dielectric constant increasing for increasing filler content. The β-relaxation in the composite samples is similar to the one observed for -PVDF obtained by stretching. A superparamagnetic behavior was observed for NiFe2O4/PVDF composites, whereas CoFe2O4/PVDF samples develop a hysteresis cycle with coercivity of 0.3 T. |
|---|---|
| Autores principais: | Martins, P. |
| Outros Autores: | Costa, Carlos M.; Botelho, Gabriela; Lanceros-Méndez, S.; Barandiaran, J. M.; Gutierrez, J. |
| Assunto: | Polymer composites Dielectric properties Magnetic properties Nucleation Composite materials |
| Ano: | 2012 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867439119697707008 |
|---|---|
| author | Martins, P. |
| author2 | Costa, Carlos M. Botelho, Gabriela Lanceros-Méndez, S. Barandiaran, J. M. Gutierrez, J. |
| author2_role | author author author author author |
| author_facet | Martins, P. Costa, Carlos M. Botelho, Gabriela Lanceros-Méndez, S. Barandiaran, J. M. Gutierrez, J. |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Martins, P.\"},{\"Person.name\":\"Costa, Carlos M.\"},{\"Person.name\":\"Botelho, Gabriela\"},{\"Person.name\":\"Lanceros-Méndez, S.\"},{\"Person.name\":\"Barandiaran, J. M.\"},{\"Person.name\":\"Gutierrez, J.\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Martins, P. Costa, Carlos M. Botelho, Gabriela Lanceros-Méndez, S. Barandiaran, J. M. Gutierrez, J. |
| datacite.date.Accepted.fl_str_mv | 2012-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2013-01-15T15:48:32Z |
| datacite.date.embargoed.fl_str_mv | 2013-01-15T15:48:32Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Polymer composites Dielectric properties Magnetic properties Nucleation Composite materials |
| datacite.titles.title.fl_str_mv | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Martins, P. Costa, Carlos M. Botelho, Gabriela Lanceros-Méndez, S. Barandiaran, J. M. Gutierrez, J. |
| dc.date.Accepted.fl_str_mv | 2012-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2013-01-15T15:48:32Z |
| dc.date.embargoed.fl_str_mv | 2013-01-15T15:48:32Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/22637 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Polymer composites Dielectric properties Magnetic properties Nucleation Composite materials |
| dc.title.fl_str_mv | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Particulate composite films of poly(vinylidene fluoride) and CoFe2O4 and NiFe2O4 ferrites were prepared from solvent casting and melt processing. The well dispersed ferrite nanoparticles nucleate the piezoelectric -phase of the polymer, but the different ferrites nucleate the whole polymer crystalline phase at different filler concentrations. The macroscopic magnetic and dielectric response of the composites demonstrates a strong dependence on the volume fraction of ferrite nanoparticles, with both magnetization and dielectric constant increasing for increasing filler content. The β-relaxation in the composite samples is similar to the one observed for -PVDF obtained by stretching. A superparamagnetic behavior was observed for NiFe2O4/PVDF composites, whereas CoFe2O4/PVDF samples develop a hysteresis cycle with coercivity of 0.3 T. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/b45a865c-f3be-4c13-ba92-f0d2a39a11f4/download |
| id | rum_dbd4b894538d02f6c2c9d5cd36e5d75e |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/22637 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/22637 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Martins, P. Costa, Carlos M. Botelho, Gabriela Lanceros-Méndez, S. Barandiaran, J. M. Gutierrez, J. |
| publishDate | 2012 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engElsevierporParticulate composite films of poly(vinylidene fluoride) and CoFe2O4 and NiFe2O4 ferrites were prepared from solvent casting and melt processing. The well dispersed ferrite nanoparticles nucleate the piezoelectric -phase of the polymer, but the different ferrites nucleate the whole polymer crystalline phase at different filler concentrations. The macroscopic magnetic and dielectric response of the composites demonstrates a strong dependence on the volume fraction of ferrite nanoparticles, with both magnetization and dielectric constant increasing for increasing filler content. The β-relaxation in the composite samples is similar to the one observed for -PVDF obtained by stretching. A superparamagnetic behavior was observed for NiFe2O4/PVDF composites, whereas CoFe2O4/PVDF samples develop a hysteresis cycle with coercivity of 0.3 T.application/pdfporDielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocompositesMartins, P.Costa, Carlos M.Botelho, GabrielaLanceros-Méndez, S.Barandiaran, J. M.Gutierrez, J.HostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptISSNIsPartOf0254-0584DOIIsPartOf10.1016/j.matchemphys.2011.10.0372013-01-15T15:48:32Z20122012-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/22637http://purl.org/coar/access_right/c_16ecrestricted accessPolymer compositesDielectric propertiesMagnetic propertiesNucleationComposite materials1070603 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://repositorium.uminho.pt/bitstreams/b45a865c-f3be-4c13-ba92-f0d2a39a11f4/download |
| spellingShingle | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites Martins, P. Polymer composites Dielectric properties Magnetic properties Nucleation Composite materials |
| status | SINGLETON |
| subject.fl_str_mv | Polymer composites Dielectric properties Magnetic properties Nucleation Composite materials |
| title | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites |
| title_full | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites |
| title_fullStr | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites |
| title_full_unstemmed | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites |
| title_short | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites |
| title_sort | Dielectric and magnetic properties of ferrite/poly(vinylidene fluoride) nanocomposites |
| topic | Polymer composites Dielectric properties Magnetic properties Nucleation Composite materials |
| topic_facet | Polymer composites Dielectric properties Magnetic properties Nucleation Composite materials |
| url | https://hdl.handle.net/1822/22637 |
| visible | 1 |