Wasp-waisted behavior in magnetic hysteresis curves of CoFe2O4 nanopowder at a low temperature: experimental evidence and theoretical approach

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dc.creatorTibério Magno de Lima Alves
dc.creatorBruno Ferreira Amorim
dc.creatorMarco Antonio Morales Torres
dc.creatorClaudionor Gomes Bezerra
dc.creatorSuzana Nóbrega de Medeiros
dc.creatorPedro Lana Gastelois
dc.creatorLuis Eugenio Fernandez Outon
dc.creatorWaldemar Augusto de Almeida Macedo
dc.date.accessioned2025-02-20T19:09:01Z
dc.date.accessioned2025-09-08T23:43:02Z
dc.date.available2025-02-20T19:09:01Z
dc.date.issued2017
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1039/C6RA28727A
dc.identifier.issn2046-2069
dc.identifier.urihttps://hdl.handle.net/1843/80270
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofRSC Advances
dc.rightsAcesso Restrito
dc.subjectAnisotropia
dc.subjectHisterese
dc.subjectMagnetismo
dc.subject.otherAnisotropy
dc.subject.otherHysteresis
dc.subject.otherWasp
dc.subject.otherMagnetism
dc.titleWasp-waisted behavior in magnetic hysteresis curves of CoFe2O4 nanopowder at a low temperature: experimental evidence and theoretical approach
dc.typeArtigo de periódico
local.citation.epage22196
local.citation.issue36
local.citation.spage22187
local.citation.volume7
local.description.resumoWe theoretically and experimentally investigated wasp-waisted magnetic hysteresis curves at a low temperature for CoFe2O4 nanopowders. Our theoretical approach proposes a physical mechanism that leads to wasp-waisted behavior for a single magnetic phase with the same anisotropic field, contrary to that of typical multi-phase magnetic systems. Our simulations show that a combination of effects, namely easy-plane anisotropy configuration and dipolar interactions, results in a double peak in the magnetic susceptibility curve of a granular magnetic system. As experimental evidence of such an effect, we present a CoFe2O 4 nanopowder and its structural and magnetic characterizations, which support a single magnetic phase. In addition, the evidence does not corroborate many explanations reported in the literature for wasp-waisted magnetic behavior. Our results provide evidence for a tetragonal crystalline phase of CoFe2 O4 due to magneto-elastic coupling, recently reported in the literature.
local.identifier.orcidhttps://orcid.org/0000-0001-6429-160X
local.identifier.orcidhttps://orcid.org/0000-0001-9660-2142
local.identifier.orcidhttps://orcid.org/0000-0003-4656-4592
local.identifier.orcidhttps://orcid.org/0000-0001-7849-5013
local.identifier.orcidhttps://orcid.org/0000-0003-3264-337X
local.identifier.orcidhttps://orcid.org/0000-0001-5451-9965
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://pubs.rsc.org/en/content/articlelanding/2017/ra/c6ra28727a

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