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dc.contributor.authorRighetti, V. A. N.pt_BR
dc.contributor.authorGratens, Xavier P. M.pt_BR
dc.contributor.authorChitta, Valmir Antoniopt_BR
dc.contributor.authorDe Godoy, Marcio F.pt_BR
dc.contributor.authorRodrigues, Ariano De Giovannipt_BR
dc.contributor.authorAbramof, Eduardo G.pt_BR
dc.contributor.authorDias, Johnny Ferrazpt_BR
dc.contributor.authorSchikora, Detlefpt_BR
dc.contributor.authorAs, Donat Josefpt_BR
dc.contributor.authorLischka, Klauspt_BR
dc.date.accessioned2017-09-27T02:24:39Zpt_BR
dc.date.issued2016pt_BR
dc.identifier.issn0021-8979pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/168895pt_BR
dc.description.abstractIn this article, we report on structural and magnetic properties of cubic GaN epitaxial layers implanted with Fe ions and subsequently subjected to thermal annealing. The epitaxial quality of the layers was studied by X-ray diffraction rocking curves (x-scans) and Raman spectroscopy. The results show that the implantation damages the crystal structure producing an expansion of the lattice parameter in the implanted region. These damages are partially removed by the thermal treatment. Room temperature ferromagnetism is observed for the sample implanted with a dose of 1.2 1016cm 2, while samples implanted with 2.4 1016cm 2 show a coexistence of ferromagnetism and paramagnetism due to disperse Fe3þ. Thermal annealing changes these magnetic properties. For the low dose sample, the ferromagnetism is converted into paramagnetism while for the high dose we observed an enhancement of the ferromagnetic contribution characterized by a superparamagnetism behavior attributed to Fe-based particles. Published by AIP Publishing.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofJournal of applied physics. New York. Vol. 120, no. 10 (Sept. 2016), 103901, 6 p.pt_BR
dc.rightsOpen Accessen
dc.subjectPropriedades magnéticaspt_BR
dc.subjectFerromagnetismopt_BR
dc.subjectDifração de raios Xpt_BR
dc.subjectEspectroscopia ramanpt_BR
dc.subjectSemicondutorespt_BR
dc.titleMagnetic and structural properties of Fe-implanted cubic GaNpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001007838pt_BR
dc.type.originEstrangeiropt_BR


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