Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/6129
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DC Field | Value | Language |
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dc.contributor.author | Kaydashev, V.E. | pt |
dc.contributor.author | Kaidashev, E.M. | pt |
dc.contributor.author | Peres, M. | pt |
dc.contributor.author | Monteiro, T. | pt |
dc.contributor.author | Correia, M.R. | pt |
dc.contributor.author | Sobolev, N.A. | pt |
dc.contributor.author | Alves, L.C. | pt |
dc.contributor.author | Franco, N. | pt |
dc.contributor.author | Alves, E. | pt |
dc.date.accessioned | 2012-02-09T16:43:29Z | - |
dc.date.available | 2012-02-09T16:43:29Z | - |
dc.date.issued | 2009-11-03 | - |
dc.identifier.issn | 0021-8979 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/6129 | - |
dc.description | Partilhar documento na coleção da comunidade Laboratório Associado I3N | pt |
dc.description.abstract | Core-shell ZnO/ZnMnO nanowires on a-Al2O3 and GaN (buffer layer)/Si (111) substrates were fabricated by pulsed laser deposition using a Au catalyst. Two ZnO targets with a Mn content of 10% were sintered at 1150 and 550 °C in order to achieve the domination in them of paramagnetic MnO2 and ferromagnetic Mn2O3 phases, respectively. Cluster mechanism of laser ablation as a source of possible incorporation of secondary phases to the wire shell is discussed. Raman spectroscopy under excitation by an Ar+ laser revealed a broad peak related to the Mn-induced disorder and a redshift in the A1-LO phonon. Resonant Raman measurements revealed an increase in the multiphonon scattering caused by disorder in ZnO upon doping by Mn. Besides the UV emission, a vibronic green emission band assisted by a ∼ 71 meV LO phonon is also observed in the photoluminescence spectra. Core-shell structures with smooth shells show a high exciton to green band intensity ratio ( ∼ 10) even at room temperature. © 2009 American Institute of Physics | pt |
dc.description.sponsorship | SANDiE Network of Excellence of the EU | pt |
dc.description.sponsorship | FCT-PTDC/FIS/72843/2006 | pt |
dc.language.iso | eng | pt |
dc.publisher | AIP | pt |
dc.relation.uri | http://www.scopus.com/inward/record.url?eid=2-s2.0-70450234976&partnerID=40&md5=a17df797e50194e49727f09b23e27b10 | - |
dc.rights | openAccess | por |
dc.subject | Alumina | pt |
dc.subject | Catalysts | pt |
dc.subject | Elemental semiconductors | pt |
dc.subject | Excitons | pt |
dc.subject | Ferromagnetic materials | pt |
dc.subject | Ferromagnetic-paramagnetic transitions | pt |
dc.subject | Gallium compounds | pt |
dc.subject | III-V semiconductors | pt |
dc.subject | II-VI semiconductors | pt |
dc.subject | Nanofabrication | pt |
dc.subject | Nanowires | pt |
dc.subject | Paramagnetic materials | pt |
dc.subject | Photoluminescence | pt |
dc.subject | Pulsed laser deposition | pt |
dc.subject | Raman spectra | pt |
dc.subject | Red shift | pt |
dc.subject | Semiconductor quantum wires | pt |
dc.subject | Semimagnetic semiconductors | pt |
dc.subject | Silicon | pt |
dc.subject | Sintering | pt |
dc.subject | Ultraviolet spectra | pt |
dc.subject | Wide band gap semiconductors | pt |
dc.subject | Zinc compounds | pt |
dc.title | Structural and optical properties of Zn0.9 Mn0.1 O/ZnO core-shell nanowires designed by pulsed laser deposition | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 093501-1 | pt |
degois.publication.issue | 9 | pt |
degois.publication.issue | 9 | - |
degois.publication.lastPage | 093501 | pt |
degois.publication.title | Journal of Applied Physics | pt |
degois.publication.volume | 106 | pt |
dc.identifier.doi | 10.1063/1.3253572 | * |
Appears in Collections: | DFis - Artigos I3N-FSCOSD - Artigos |
Files in This Item:
File | Description | Size | Format | |
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JAPL.pdf | versão pdf do editor | 536.69 kB | Adobe PDF | View/Open |
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