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

dc.contributorUniversidade Federal de São Carlos (UFSCar)
dc.contributorUniversidade Federal de Alfenas (UNIFAL)
dc.contributorUniversidade de São Paulo (USP)
dc.contributorCentro de Desenvolvimento de Tecnologia Nuclear/CNEN
dc.contributorUniversidade Federal de Uberlândia (UFU)
dc.contributorUniversidade Federal de Ouro Preto (UFOP)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:28:53Z
dc.date.available2014-05-27T11:28:53Z
dc.date.created2014-05-27T11:28:53Z
dc.date.issued2013-04-05
dc.identifierJournal of Alloys and Compounds, v. 555, p. 315-319.
dc.identifier0925-8388
dc.identifierhttp://hdl.handle.net/11449/75069
dc.identifier10.1016/j.jallcom.2012.11.105
dc.identifierWOS:000314909700052
dc.identifier2-s2.0-84873901012
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. © 2012 Elsevier B.V. All rights reserved.
dc.languageeng
dc.relationJournal of Alloys and Compounds
dc.relation3.779
dc.relation1,020
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectMagnetic measurements
dc.subjectMagnetically ordered materials
dc.subjectOxide materials
dc.subjectScanning tunnelling microscopy
dc.subjectSolid state reactions
dc.subjectSTM, Synchrotron radiation
dc.subjectX-ray diffraction
dc.subjectBound magnetic polarons
dc.subjectCO concentrations
dc.subjectCo-doped ZnO
dc.subjectFerromagnetic behaviors
dc.subjectHall measurements
dc.subjectMagnetic characterization
dc.subjectMagnetically ordered material
dc.subjectMicrostructural analysis
dc.subjectMolar concentration
dc.subjectRoom temperature
dc.subjectRoom temperature ferromagnetism
dc.subjectDefects
dc.subjectFerromagnetism
dc.subjectHydrogenation
dc.subjectMagnetic couplings
dc.subjectMagnetic variables measurement
dc.subjectParamagnetism
dc.subjectScanning tunneling microscopy
dc.subjectX ray diffraction
dc.subjectCharacterization
dc.titleEvidence of defect-mediated magnetic coupling on hydrogenated Co-doped ZnO
dc.typeArtículos de revistas


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