Evidence of defect-mediated magnetic coupling on hydrogenated Co-doped ZnO.

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dc.contributor.authorGodoy, Marcio Peron Franco de
dc.contributor.authorMesquita, Alexandre
dc.contributor.authorAvansi Junior, Waldir
dc.contributor.authorNeves, P. P.
dc.contributor.authorChitta, Valmir Antônio
dc.contributor.authorFerraz, Wilmar Barbosa
dc.contributor.authorBoselli, Marco Aurélio
dc.contributor.authorSabioni, Antônio Claret Soares
dc.contributor.authorCarvalho, Hugo Bonette de
dc.date.accessioned2015-03-25T16:02:59Z
dc.date.available2015-03-25T16:02:59Z
dc.date.issued2013
dc.description.abstractHydrogenated bulk Zn1_xCoxO samples were synthesized via standard solid-state reaction route with Co molar concentrations up to 15 at.%. Magnetic characterization demonstrates a room temperature ferromagnetic behavior associated to a paramagnetic Curie–Weiss component. Detailed microstructural analysis was carried out to exclude the presence of extrinsic sources of ferromagnetism. The magnetization increases linearly as a function of Co concentration. Hall measurements reveal an insulating character for the whole set of samples. In this context, the defect mediated magnetic coupling between the Co atoms under the scope of the bound magnetic polarons model is used to interpret the observed room temperature ferromagnetism.pt_BR
dc.identifier.citationGODOY, M. P. F. de et al. Evidence of defect-mediated magnetic coupling on hydrogenated Co-doped ZnO. Journal of Alloys and Compounds, v. 555, p. 315-319, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0925838812020890>. Acesso em: 13 fev. 2015.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jallcom.2012.11.105
dc.identifier.issn0925-8388
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/4763
dc.language.isoen_USpt_BR
dc.rights.licenseO periódico Journal of Alloys and Compounds concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3566050895727.pt_BR
dc.subjectSolid state reactionspt_BR
dc.subjectOxide materialspt_BR
dc.subjectMagnetically ordered materialspt_BR
dc.subjectX-ray diffractionpt_BR
dc.subjectScaning tunnelling microscopypt_BR
dc.titleEvidence of defect-mediated magnetic coupling on hydrogenated Co-doped ZnO.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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