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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/100212
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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 Técnicas2025-09-29T10:08:35Zoai: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:34982025-09-29 10:08:35.763CONICET 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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13.070432 |