Magnetic and structural properties of Fe-implanted cubic GaN
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/168895 |
Resumo: | In 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. |
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Righetti, V. A. N.Gratens, Xavier P. M.Chitta, Valmir AntonioDe Godoy, Marcio F.Rodrigues, Ariano De GiovanniAbramof, Eduardo G.Dias, Johnny FerrazSchikora, DetlefAs, Donat JosefLischka, Klaus2017-09-27T02:24:39Z20160021-8979http://hdl.handle.net/10183/168895001007838In 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.application/pdfengJournal of applied physics. New York. Vol. 120, no. 10 (Sept. 2016), 103901, 6 p.Propriedades magnéticasFerromagnetismoDifração de raios XEspectroscopia RamanSemicondutoresMagnetic and structural properties of Fe-implanted cubic GaNEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001007838.pdf001007838.pdfTexto completo (inglês)application/pdf1514803http://www.lume.ufrgs.br/bitstream/10183/168895/1/001007838.pdf96a32511c1634a27aa651b62ced0f11dMD51TEXT001007838.pdf.txt001007838.pdf.txtExtracted Texttext/plain32424http://www.lume.ufrgs.br/bitstream/10183/168895/2/001007838.pdf.txteaa0035a22355828acb4cbe17eaeea0fMD52THUMBNAIL001007838.pdf.jpg001007838.pdf.jpgGenerated Thumbnailimage/jpeg2122http://www.lume.ufrgs.br/bitstream/10183/168895/3/001007838.pdf.jpg7099314150933311e21873fe40915d8fMD5310183/1688952024-04-28 06:55:31.244831oai:www.lume.ufrgs.br:10183/168895Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-04-28T09:55:31Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Magnetic and structural properties of Fe-implanted cubic GaN |
title |
Magnetic and structural properties of Fe-implanted cubic GaN |
spellingShingle |
Magnetic and structural properties of Fe-implanted cubic GaN Righetti, V. A. N. Propriedades magnéticas Ferromagnetismo Difração de raios X Espectroscopia Raman Semicondutores |
title_short |
Magnetic and structural properties of Fe-implanted cubic GaN |
title_full |
Magnetic and structural properties of Fe-implanted cubic GaN |
title_fullStr |
Magnetic and structural properties of Fe-implanted cubic GaN |
title_full_unstemmed |
Magnetic and structural properties of Fe-implanted cubic GaN |
title_sort |
Magnetic and structural properties of Fe-implanted cubic GaN |
author |
Righetti, V. A. N. |
author_facet |
Righetti, V. A. N. Gratens, Xavier P. M. Chitta, Valmir Antonio De Godoy, Marcio F. Rodrigues, Ariano De Giovanni Abramof, Eduardo G. Dias, Johnny Ferraz Schikora, Detlef As, Donat Josef Lischka, Klaus |
author_role |
author |
author2 |
Gratens, Xavier P. M. Chitta, Valmir Antonio De Godoy, Marcio F. Rodrigues, Ariano De Giovanni Abramof, Eduardo G. Dias, Johnny Ferraz Schikora, Detlef As, Donat Josef Lischka, Klaus |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Righetti, V. A. N. Gratens, Xavier P. M. Chitta, Valmir Antonio De Godoy, Marcio F. Rodrigues, Ariano De Giovanni Abramof, Eduardo G. Dias, Johnny Ferraz Schikora, Detlef As, Donat Josef Lischka, Klaus |
dc.subject.por.fl_str_mv |
Propriedades magnéticas Ferromagnetismo Difração de raios X Espectroscopia Raman Semicondutores |
topic |
Propriedades magnéticas Ferromagnetismo Difração de raios X Espectroscopia Raman Semicondutores |
description |
In 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. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016 |
dc.date.accessioned.fl_str_mv |
2017-09-27T02:24:39Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/168895 |
dc.identifier.issn.pt_BR.fl_str_mv |
0021-8979 |
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001007838 |
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0021-8979 001007838 |
url |
http://hdl.handle.net/10183/168895 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of applied physics. New York. Vol. 120, no. 10 (Sept. 2016), 103901, 6 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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