Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111)
Autor(a) principal: | |
---|---|
Data de Publicação: | 2004 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/104262 |
Resumo: | This paper reports on the magnetic properties of Fe thin film grown on vicinal Si(111). The surface analysis, performed via scanning tunneling microscopy, showed that the iron grows in a form of two distinct types of elongated nanosized grains, aligned parallel and perpendicular to the substrate steps, respectively. A phenomenological model was used to interpret the experimental magnetization data which considers the two types of Fe nanoclusters with both cubic and uniaxial anisotropies, where those of each type are all identical and aligned. Every particle of the first type is coupled to the adjacent particle of the other type only via direct exchange coupling through the corresponding surface atoms. The experimental hysteresis loops as well as the coercivity and remanent magnetization angular variations are very well reproduced by the model, demonstrating that the magnetic behavior of this system is mainly determined by the ferromagnetic intralayer exchange coupling. |
id |
UFRGS-2_b1df2c522818e36108cfb135fceea04e |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/104262 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Santos, Mauricio Cougo dosGeshev, Julian PenkovPereira, Luis GustavoAlves, Maria do Carmo MartinsSchmidt, Joao EdgarAllongue, Philippe2014-10-08T02:11:16Z20041098-0121http://hdl.handle.net/10183/104262000445646This paper reports on the magnetic properties of Fe thin film grown on vicinal Si(111). The surface analysis, performed via scanning tunneling microscopy, showed that the iron grows in a form of two distinct types of elongated nanosized grains, aligned parallel and perpendicular to the substrate steps, respectively. A phenomenological model was used to interpret the experimental magnetization data which considers the two types of Fe nanoclusters with both cubic and uniaxial anisotropies, where those of each type are all identical and aligned. Every particle of the first type is coupled to the adjacent particle of the other type only via direct exchange coupling through the corresponding surface atoms. The experimental hysteresis loops as well as the coercivity and remanent magnetization angular variations are very well reproduced by the model, demonstrating that the magnetic behavior of this system is mainly determined by the ferromagnetic intralayer exchange coupling.application/pdfengPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 70, no. 10 (Sept. 2004), 104420 5p.Materiais ferromagnéticosAglomerados metálicosSilícioInterações de troca (elétron)Tamanho de partículaIntralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111)Estrangeiroinfo: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:UFRGSORIGINAL000445646.pdf000445646.pdfTexto completo (inglês)application/pdf392652http://www.lume.ufrgs.br/bitstream/10183/104262/1/000445646.pdfd6aa7507b1d037bc4963582154ca2a3aMD51TEXT000445646.pdf.txt000445646.pdf.txtExtracted Texttext/plain23930http://www.lume.ufrgs.br/bitstream/10183/104262/2/000445646.pdf.txtbd367953b1767a208ad8a8556eff570bMD52THUMBNAIL000445646.pdf.jpg000445646.pdf.jpgGenerated Thumbnailimage/jpeg2034http://www.lume.ufrgs.br/bitstream/10183/104262/3/000445646.pdf.jpgd2673383105b36bd9d4abc444835c770MD5310183/1042622023-09-20 03:33:27.780292oai:www.lume.ufrgs.br:10183/104262Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-20T06:33:27Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111) |
title |
Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111) |
spellingShingle |
Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111) Santos, Mauricio Cougo dos Materiais ferromagnéticos Aglomerados metálicos Silício Interações de troca (elétron) Tamanho de partícula |
title_short |
Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111) |
title_full |
Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111) |
title_fullStr |
Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111) |
title_full_unstemmed |
Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111) |
title_sort |
Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111) |
author |
Santos, Mauricio Cougo dos |
author_facet |
Santos, Mauricio Cougo dos Geshev, Julian Penkov Pereira, Luis Gustavo Alves, Maria do Carmo Martins Schmidt, Joao Edgar Allongue, Philippe |
author_role |
author |
author2 |
Geshev, Julian Penkov Pereira, Luis Gustavo Alves, Maria do Carmo Martins Schmidt, Joao Edgar Allongue, Philippe |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Santos, Mauricio Cougo dos Geshev, Julian Penkov Pereira, Luis Gustavo Alves, Maria do Carmo Martins Schmidt, Joao Edgar Allongue, Philippe |
dc.subject.por.fl_str_mv |
Materiais ferromagnéticos Aglomerados metálicos Silício Interações de troca (elétron) Tamanho de partícula |
topic |
Materiais ferromagnéticos Aglomerados metálicos Silício Interações de troca (elétron) Tamanho de partícula |
description |
This paper reports on the magnetic properties of Fe thin film grown on vicinal Si(111). The surface analysis, performed via scanning tunneling microscopy, showed that the iron grows in a form of two distinct types of elongated nanosized grains, aligned parallel and perpendicular to the substrate steps, respectively. A phenomenological model was used to interpret the experimental magnetization data which considers the two types of Fe nanoclusters with both cubic and uniaxial anisotropies, where those of each type are all identical and aligned. Every particle of the first type is coupled to the adjacent particle of the other type only via direct exchange coupling through the corresponding surface atoms. The experimental hysteresis loops as well as the coercivity and remanent magnetization angular variations are very well reproduced by the model, demonstrating that the magnetic behavior of this system is mainly determined by the ferromagnetic intralayer exchange coupling. |
publishDate |
2004 |
dc.date.issued.fl_str_mv |
2004 |
dc.date.accessioned.fl_str_mv |
2014-10-08T02:11:16Z |
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/10183/104262 |
dc.identifier.issn.pt_BR.fl_str_mv |
1098-0121 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000445646 |
identifier_str_mv |
1098-0121 000445646 |
url |
http://hdl.handle.net/10183/104262 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 70, no. 10 (Sept. 2004), 104420 5p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/104262/1/000445646.pdf http://www.lume.ufrgs.br/bitstream/10183/104262/2/000445646.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/104262/3/000445646.pdf.jpg |
bitstream.checksum.fl_str_mv |
d6aa7507b1d037bc4963582154ca2a3a bd367953b1767a208ad8a8556eff570b d2673383105b36bd9d4abc444835c770 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224852575617024 |