Electronic structure and magnetization of Fe-Co alloys and multilayers
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/95416 |
Resumo: | The magnetic properties and electronic structure of bcc Fe–Co alloys and multilayers are investigated with the first-principles molecular cluster discrete variational method. The density of states and the contact interactions are obtained for the central atom of each cluster. Besides the local magnetic moment and the isomer shift the occupancies of 3d, 4s, and 4p shells are investigated when Co atoms are introduced in the immediate vicinity of iron sites. The calculations indicate a varying magnetic moment for Fe atoms and a constant value for Co atoms which is in agreement with experiments. For the superstructures, our results indicate a strong dependence of the local moment, contact field, and isomer shift for Fe atoms with the thick of iron layers. The internal field increases for thicker Fe layers while the local moment decreases which is also in accordance with experimental predictions. |
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Paduani, CledersonKrause, Joao Carlos2014-05-20T02:04:52Z19990021-8979http://hdl.handle.net/10183/95416000239744The magnetic properties and electronic structure of bcc Fe–Co alloys and multilayers are investigated with the first-principles molecular cluster discrete variational method. The density of states and the contact interactions are obtained for the central atom of each cluster. Besides the local magnetic moment and the isomer shift the occupancies of 3d, 4s, and 4p shells are investigated when Co atoms are introduced in the immediate vicinity of iron sites. The calculations indicate a varying magnetic moment for Fe atoms and a constant value for Co atoms which is in agreement with experiments. For the superstructures, our results indicate a strong dependence of the local moment, contact field, and isomer shift for Fe atoms with the thick of iron layers. The internal field increases for thicker Fe layers while the local moment decreases which is also in accordance with experimental predictions.application/pdfengJournal of Applied Physics. Woodbury. Vol. 86, no. 1 (July 1999), p. 578-583Ligas de ferroLigas de cobaltoPropriedades magnéticasEstruturas eletronicasTransformações de faseAplicacao de multicamadasElectronic structure and magnetization of Fe-Co alloys and multilayersEstrangeiroinfo: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:UFRGSORIGINAL000239744.pdf000239744.pdfTexto completo (inglês)application/pdf247017http://www.lume.ufrgs.br/bitstream/10183/95416/1/000239744.pdf843034cbe8b0c16b4ac8edd527c5d738MD51TEXT000239744.pdf.txt000239744.pdf.txtExtracted Texttext/plain30790http://www.lume.ufrgs.br/bitstream/10183/95416/2/000239744.pdf.txtb07d0799acc05063bc1c30e128886958MD52THUMBNAIL000239744.pdf.jpg000239744.pdf.jpgGenerated Thumbnailimage/jpeg1548http://www.lume.ufrgs.br/bitstream/10183/95416/3/000239744.pdf.jpg28573b653ac989a96bd35eea482da5b0MD5310183/954162018-10-08 08:39:37.64oai:www.lume.ufrgs.br:10183/95416Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-08T11:39:37Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Electronic structure and magnetization of Fe-Co alloys and multilayers |
title |
Electronic structure and magnetization of Fe-Co alloys and multilayers |
spellingShingle |
Electronic structure and magnetization of Fe-Co alloys and multilayers Paduani, Clederson Ligas de ferro Ligas de cobalto Propriedades magnéticas Estruturas eletronicas Transformações de fase Aplicacao de multicamadas |
title_short |
Electronic structure and magnetization of Fe-Co alloys and multilayers |
title_full |
Electronic structure and magnetization of Fe-Co alloys and multilayers |
title_fullStr |
Electronic structure and magnetization of Fe-Co alloys and multilayers |
title_full_unstemmed |
Electronic structure and magnetization of Fe-Co alloys and multilayers |
title_sort |
Electronic structure and magnetization of Fe-Co alloys and multilayers |
author |
Paduani, Clederson |
author_facet |
Paduani, Clederson Krause, Joao Carlos |
author_role |
author |
author2 |
Krause, Joao Carlos |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Paduani, Clederson Krause, Joao Carlos |
dc.subject.por.fl_str_mv |
Ligas de ferro Ligas de cobalto Propriedades magnéticas Estruturas eletronicas Transformações de fase Aplicacao de multicamadas |
topic |
Ligas de ferro Ligas de cobalto Propriedades magnéticas Estruturas eletronicas Transformações de fase Aplicacao de multicamadas |
description |
The magnetic properties and electronic structure of bcc Fe–Co alloys and multilayers are investigated with the first-principles molecular cluster discrete variational method. The density of states and the contact interactions are obtained for the central atom of each cluster. Besides the local magnetic moment and the isomer shift the occupancies of 3d, 4s, and 4p shells are investigated when Co atoms are introduced in the immediate vicinity of iron sites. The calculations indicate a varying magnetic moment for Fe atoms and a constant value for Co atoms which is in agreement with experiments. For the superstructures, our results indicate a strong dependence of the local moment, contact field, and isomer shift for Fe atoms with the thick of iron layers. The internal field increases for thicker Fe layers while the local moment decreases which is also in accordance with experimental predictions. |
publishDate |
1999 |
dc.date.issued.fl_str_mv |
1999 |
dc.date.accessioned.fl_str_mv |
2014-05-20T02:04:52Z |
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/10183/95416 |
dc.identifier.issn.pt_BR.fl_str_mv |
0021-8979 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000239744 |
identifier_str_mv |
0021-8979 000239744 |
url |
http://hdl.handle.net/10183/95416 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of Applied Physics. Woodbury. Vol. 86, no. 1 (July 1999), p. 578-583 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Repositório Institucional da UFRGS |
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