Effect of the magnetic impurity on the charge diffusion in highly dilute Ce doped LaMnO3

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dc.contributor.authorCABRERA-PASCA, G.pt_BR
dc.contributor.authorBOSCH-SANTOS, B.pt_BR
dc.contributor.authorBURIMOVA, A.pt_BR
dc.contributor.authorCORREA, E.pt_BR
dc.contributor.authorCARBONARI, A.W.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS, 64thpt_BR
dc.date.accessioned2020-10-26T14:53:25Z
dc.date.available2020-10-26T14:53:25Z
dc.date.eventoNovember 4-8, 2019pt_BR
dc.description.abstractLaMnO3+δ is a complex oxide, which, depending on the oxygen excess concentration δ, presents different crystalline structure and interesting magnetic and electric properties such as colossal magnetoresistance, polaron dynamics, multiferroic behavior, and charge-orbital ordering. This complexity requires different characterization techniques to draw a picture as complete as possible allowing a good understanding of these phenomena. Here, we have used the perturbed angular correlation (PAC) technique to measure hyperfine interactions at La and Mn sites of LaMnO3+δ (δ ~0.15) using 140Ce (at La sites) and 111Cd (at both La and Mn sites) as probe nuclei in order to investigate within an atomic scale the magnetic and electric interactions in this compound. Results show that 111Cd nuclei occupy quite high symmetric local sites in agreement with a rhombohedral structure. The magnetic hyperfine field (Bhf) measured with 111Cd at La sites is very small (Bhf = 0.40 T) due to the supertransferred magnetic field from Mn neighbors through oxygen orbitals. On the other hand, 140Ce nuclei at La sites present a saturation field of around 3.7 T much higher than that expected for La sites (due to the weak transfer field by superexchange mechanism). In addition, for temperature range above the magnetic ordering (200-300 K) a dynamic hyperfine interaction was observed characterized by the attenuation parameter λ(T) whose temperature dependence allowed to determine the activation energy (Ea) associated to the polaron diffusion, as displayed in Fig. 1.pt_BR
dc.event.siglaMMMpt_BR
dc.format.extent207-207pt_BR
dc.identifier.citationCABRERA-PASCA, G.; BOSCH-SANTOS, B.; BURIMOVA, A.; CORREA, E.; CARBONARI, A.W. Effect of the magnetic impurity on the charge diffusion in highly dilute Ce doped LaMnO3. In: ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS, 64th, November 4-8, 2019, Las Vegas, Nevada, USA. <b>Abstract...</b> p. 207-207. Disponível em: http://repositorio.ipen.br/handle/123456789/31533.
dc.identifier.orcid0000-0002-4499-5949pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4499-5949
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/31533
dc.local.eventoLas Vegas, Nevada, USApt_BR
dc.rightsopenAccesspt_BR
dc.titleEffect of the magnetic impurity on the charge diffusion in highly dilute Ce doped LaMnO3pt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorANASTASIA BURIMOVA
ipen.autorARTUR WILSON CARBONARI
ipen.autorBRIANNA BOSCH DOS SANTOS
ipen.codigoautor14454
ipen.codigoautor1437
ipen.codigoautor7480
ipen.contributor.ipenauthorANASTASIA BURIMOVA
ipen.contributor.ipenauthorARTUR WILSON CARBONARI
ipen.contributor.ipenauthorBRIANNA BOSCH DOS SANTOS
ipen.date.recebimento20-10
ipen.event.datapadronizada2019pt_BR
ipen.identifier.ipendoc27305pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication4f5e0f7f-3b35-4755-9aa2-7647babb9530
relation.isAuthorOfPublication8f236231-e73c-4182-a596-d83e49cd0404
relation.isAuthorOfPublication8eb536a6-8b2a-449c-aebf-392b54cd208f
relation.isAuthorOfPublication.latestForDiscovery8eb536a6-8b2a-449c-aebf-392b54cd208f
sigepi.autor.atividadeCARBONARI, A.W.:1437:310:Npt_BR
sigepi.autor.atividadeBURIMOVA, A.:14454:310:Npt_BR
sigepi.autor.atividadeBOSCH-SANTOS, B.:7480:310:Npt_BR
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