Confinement effects in irradiation of nanocrystalline diamond

Autores
Valencia, Felipe; Mella, José D.; González, Rafael I.; Kiwi, Miguel; Bringa, Eduardo Marcial
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Swift heavy ion irradiation does not generate amorphous tracks in diamond, contrary to what happens in graphite or in diamond-like carbon. Since nanocrystalline diamond is of interest for several technological applications we investigate the reason for this difference, by means of large scale atomistic simulations of ion tracks in nanocrystalline diamond, using a thermal spike model, with up to 2.5 million atoms, and grain sizes in the range 5-10 nm. We conclude that tracking can be achieved under these conditions, when it is absent in single crystal diamond: for 5 nm samples the tracking threshold is below 15 keV/nm. Point defects are observed below this threshold. As the energy loss increases the track region becomes amorphous, and graphitic-like, with predominant sp2 hybridization. This higher sensitivity to irradiation can be related to a very large decrease in thermal conductivity of nanocrystalline diamond, due to grain boundary confinement of the heat spike which enhances localized heating of the lattice.
Fil: Valencia, Felipe. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; Chile
Fil: Mella, José D.. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; Chile
Fil: González, Rafael I.. Universidad de Chile; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile
Fil: Kiwi, Miguel. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; Chile
Fil: Bringa, Eduardo Marcial. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Materia
DIAMOND
NANOCRYSTALS
IRRADIATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/100212
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Confinement effects in irradiation of nanocrystalline diamondValencia, FelipeMella, José D.González, Rafael I.Kiwi, MiguelBringa, Eduardo MarcialDIAMONDNANOCRYSTALSIRRADIATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Swift heavy ion irradiation does not generate amorphous tracks in diamond, contrary to what happens in graphite or in diamond-like carbon. Since nanocrystalline diamond is of interest for several technological applications we investigate the reason for this difference, by means of large scale atomistic simulations of ion tracks in nanocrystalline diamond, using a thermal spike model, with up to 2.5 million atoms, and grain sizes in the range 5-10 nm. We conclude that tracking can be achieved under these conditions, when it is absent in single crystal diamond: for 5 nm samples the tracking threshold is below 15 keV/nm. Point defects are observed below this threshold. As the energy loss increases the track region becomes amorphous, and graphitic-like, with predominant sp2 hybridization. This higher sensitivity to irradiation can be related to a very large decrease in thermal conductivity of nanocrystalline diamond, due to grain boundary confinement of the heat spike which enhances localized heating of the lattice.Fil: Valencia, Felipe. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; ChileFil: Mella, José D.. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; ChileFil: González, Rafael I.. Universidad de Chile; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; ChileFil: Kiwi, Miguel. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; ChileFil: Bringa, Eduardo Marcial. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaPergamon-Elsevier Science Ltd2015-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100212Valencia, Felipe; Mella, José D.; González, Rafael I.; Kiwi, Miguel; Bringa, Eduardo Marcial; Confinement effects in irradiation of nanocrystalline diamond; Pergamon-Elsevier Science Ltd; Carbon; 93; 8-2015; 458-4640008-6223CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.carbon.2015.05.067info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0008622315004741info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:05:42Zoai:ri.conicet.gov.ar:11336/100212instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:05:42.681CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Confinement effects in irradiation of nanocrystalline diamond
title Confinement effects in irradiation of nanocrystalline diamond
spellingShingle Confinement effects in irradiation of nanocrystalline diamond
Valencia, Felipe
DIAMOND
NANOCRYSTALS
IRRADIATION
title_short Confinement effects in irradiation of nanocrystalline diamond
title_full Confinement effects in irradiation of nanocrystalline diamond
title_fullStr Confinement effects in irradiation of nanocrystalline diamond
title_full_unstemmed Confinement effects in irradiation of nanocrystalline diamond
title_sort Confinement effects in irradiation of nanocrystalline diamond
dc.creator.none.fl_str_mv Valencia, Felipe
Mella, José D.
González, Rafael I.
Kiwi, Miguel
Bringa, Eduardo Marcial
author Valencia, Felipe
author_facet Valencia, Felipe
Mella, José D.
González, Rafael I.
Kiwi, Miguel
Bringa, Eduardo Marcial
author_role author
author2 Mella, José D.
González, Rafael I.
Kiwi, Miguel
Bringa, Eduardo Marcial
author2_role author
author
author
author
dc.subject.none.fl_str_mv DIAMOND
NANOCRYSTALS
IRRADIATION
topic DIAMOND
NANOCRYSTALS
IRRADIATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Swift heavy ion irradiation does not generate amorphous tracks in diamond, contrary to what happens in graphite or in diamond-like carbon. Since nanocrystalline diamond is of interest for several technological applications we investigate the reason for this difference, by means of large scale atomistic simulations of ion tracks in nanocrystalline diamond, using a thermal spike model, with up to 2.5 million atoms, and grain sizes in the range 5-10 nm. We conclude that tracking can be achieved under these conditions, when it is absent in single crystal diamond: for 5 nm samples the tracking threshold is below 15 keV/nm. Point defects are observed below this threshold. As the energy loss increases the track region becomes amorphous, and graphitic-like, with predominant sp2 hybridization. This higher sensitivity to irradiation can be related to a very large decrease in thermal conductivity of nanocrystalline diamond, due to grain boundary confinement of the heat spike which enhances localized heating of the lattice.
Fil: Valencia, Felipe. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; Chile
Fil: Mella, José D.. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; Chile
Fil: González, Rafael I.. Universidad de Chile; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile
Fil: Kiwi, Miguel. Centro Para El Desarrollo de la Nanociencia y Nanotecnologia; Chile. Universidad de Chile; Chile
Fil: Bringa, Eduardo Marcial. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
description Swift heavy ion irradiation does not generate amorphous tracks in diamond, contrary to what happens in graphite or in diamond-like carbon. Since nanocrystalline diamond is of interest for several technological applications we investigate the reason for this difference, by means of large scale atomistic simulations of ion tracks in nanocrystalline diamond, using a thermal spike model, with up to 2.5 million atoms, and grain sizes in the range 5-10 nm. We conclude that tracking can be achieved under these conditions, when it is absent in single crystal diamond: for 5 nm samples the tracking threshold is below 15 keV/nm. Point defects are observed below this threshold. As the energy loss increases the track region becomes amorphous, and graphitic-like, with predominant sp2 hybridization. This higher sensitivity to irradiation can be related to a very large decrease in thermal conductivity of nanocrystalline diamond, due to grain boundary confinement of the heat spike which enhances localized heating of the lattice.
publishDate 2015
dc.date.none.fl_str_mv 2015-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/100212
Valencia, Felipe; Mella, José D.; González, Rafael I.; Kiwi, Miguel; Bringa, Eduardo Marcial; Confinement effects in irradiation of nanocrystalline diamond; Pergamon-Elsevier Science Ltd; Carbon; 93; 8-2015; 458-464
0008-6223
CONICET Digital
CONICET
url http://hdl.handle.net/11336/100212
identifier_str_mv Valencia, Felipe; Mella, José D.; González, Rafael I.; Kiwi, Miguel; Bringa, Eduardo Marcial; Confinement effects in irradiation of nanocrystalline diamond; Pergamon-Elsevier Science Ltd; Carbon; 93; 8-2015; 458-464
0008-6223
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.carbon.2015.05.067
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0008622315004741
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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