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

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorGodoy, Marcio Peron Franco de-
Autor(es): dc.creatorMesquita, A.-
Autor(es): dc.creatorAvansi Junior, Waldir-
Autor(es): dc.creatorNeves, P. P.-
Autor(es): dc.creatorChitta, Valmir Antônio-
Autor(es): dc.creatorFerraz, Wilmar Barbosa-
Autor(es): dc.creatorBoselli, Marco Aurélio-
Autor(es): dc.creatorSabioni, Antônio Claret Soares-
Autor(es): dc.creatorCarvalho, Hugo Bonette de-
Data de aceite: dc.date.accessioned2019-11-06T13:32:11Z-
Data de disponibilização: dc.date.available2019-11-06T13:32:11Z-
Data de envio: dc.date.issued2015-03-25-
Data de envio: dc.date.issued2015-03-25-
Data de envio: dc.date.issued2013-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/4763-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/557490-
Descrição: dc.descriptionHydrogenated 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.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Journal of Alloys and Compounds concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3566050895727.-
Palavras-chave: dc.subjectSolid state reactions-
Palavras-chave: dc.subjectOxide materials-
Palavras-chave: dc.subjectMagnetically ordered materials-
Palavras-chave: dc.subjectX-ray diffraction-
Palavras-chave: dc.subjectScaning tunnelling microscopy-
Título: dc.titleEvidence of defect-mediated magnetic coupling on hydrogenated Co-doped ZnO.-
Aparece nas coleções:Repositório Institucional - UFOP

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