Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge

Autores
Moya, Javier Alberto
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Two simple models were developed in order to determine the chemical composition of both nanocrystals and intergranular amorphous phases in nanocrystallized Fe73.5Si13.5B9Nb3Cu1 containing Ge using data from X-ray diffraction and Mössbauer spectroscopy techniques. Saturation magnetization of the amorphous intergranular matrix (Msam) was calculated considering the contribution of the α-Fe(Si,Ge) nanocrystals and saturation magnetization of the alloys. The behavior of Msam with the iron content of the matrix was obtained and discussed. The exchange stiffness constant for the nanograins and for the amorphous phases was determined. The increment in the coercive field (Hc) with increasing Ge content was evaluated using two theoretical models for the random magnetocrystalline anisotropy constant (〈K1〉). Results show that the magnetic hardening observed could not be attributed to an increase in 〈K1〉 but mainly to an important increment of the magnetostriction constant of the α-Fe(Si,Ge) nanocrystals (λscr). Values for λscr are proposed.
Fil: Moya, Javier Alberto. Universidad Catolica de Salta. Facultad de Ingenieria E Informatica; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Nanocrystalline Material
Soft Magnetic Material
Mossbauer Spectroscopy
Amorphous Material
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:11336/14090
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/14090
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing GeMoya, Javier AlbertoNanocrystalline MaterialSoft Magnetic MaterialMossbauer SpectroscopyAmorphous Materialhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Two simple models were developed in order to determine the chemical composition of both nanocrystals and intergranular amorphous phases in nanocrystallized Fe73.5Si13.5B9Nb3Cu1 containing Ge using data from X-ray diffraction and Mössbauer spectroscopy techniques. Saturation magnetization of the amorphous intergranular matrix (Msam) was calculated considering the contribution of the α-Fe(Si,Ge) nanocrystals and saturation magnetization of the alloys. The behavior of Msam with the iron content of the matrix was obtained and discussed. The exchange stiffness constant for the nanograins and for the amorphous phases was determined. The increment in the coercive field (Hc) with increasing Ge content was evaluated using two theoretical models for the random magnetocrystalline anisotropy constant (〈K1〉). Results show that the magnetic hardening observed could not be attributed to an increase in 〈K1〉 but mainly to an important increment of the magnetostriction constant of the α-Fe(Si,Ge) nanocrystals (λscr). Values for λscr are proposed.Fil: Moya, Javier Alberto. Universidad Catolica de Salta. Facultad de Ingenieria E Informatica; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2010-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/14090Moya, Javier Alberto; Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge; Elsevier Science; Journal Of Magnetism And Magnetic Materials; 322; 13; 7-2010; 1784-17920304-8853enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmmm.2009.12.030info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0304885309011871info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:21:49Zoai:ri.conicet.gov.ar:11336/14090instacron: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 14:21:50.344CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge
title Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge
spellingShingle Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge
Moya, Javier Alberto
Nanocrystalline Material
Soft Magnetic Material
Mossbauer Spectroscopy
Amorphous Material
title_short Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge
title_full Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge
title_fullStr Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge
title_full_unstemmed Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge
title_sort Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge
dc.creator.none.fl_str_mv Moya, Javier Alberto
author Moya, Javier Alberto
author_facet Moya, Javier Alberto
author_role author
dc.subject.none.fl_str_mv Nanocrystalline Material
Soft Magnetic Material
Mossbauer Spectroscopy
Amorphous Material
topic Nanocrystalline Material
Soft Magnetic Material
Mossbauer Spectroscopy
Amorphous Material
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Two simple models were developed in order to determine the chemical composition of both nanocrystals and intergranular amorphous phases in nanocrystallized Fe73.5Si13.5B9Nb3Cu1 containing Ge using data from X-ray diffraction and Mössbauer spectroscopy techniques. Saturation magnetization of the amorphous intergranular matrix (Msam) was calculated considering the contribution of the α-Fe(Si,Ge) nanocrystals and saturation magnetization of the alloys. The behavior of Msam with the iron content of the matrix was obtained and discussed. The exchange stiffness constant for the nanograins and for the amorphous phases was determined. The increment in the coercive field (Hc) with increasing Ge content was evaluated using two theoretical models for the random magnetocrystalline anisotropy constant (〈K1〉). Results show that the magnetic hardening observed could not be attributed to an increase in 〈K1〉 but mainly to an important increment of the magnetostriction constant of the α-Fe(Si,Ge) nanocrystals (λscr). Values for λscr are proposed.
Fil: Moya, Javier Alberto. Universidad Catolica de Salta. Facultad de Ingenieria E Informatica; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Two simple models were developed in order to determine the chemical composition of both nanocrystals and intergranular amorphous phases in nanocrystallized Fe73.5Si13.5B9Nb3Cu1 containing Ge using data from X-ray diffraction and Mössbauer spectroscopy techniques. Saturation magnetization of the amorphous intergranular matrix (Msam) was calculated considering the contribution of the α-Fe(Si,Ge) nanocrystals and saturation magnetization of the alloys. The behavior of Msam with the iron content of the matrix was obtained and discussed. The exchange stiffness constant for the nanograins and for the amorphous phases was determined. The increment in the coercive field (Hc) with increasing Ge content was evaluated using two theoretical models for the random magnetocrystalline anisotropy constant (〈K1〉). Results show that the magnetic hardening observed could not be attributed to an increase in 〈K1〉 but mainly to an important increment of the magnetostriction constant of the α-Fe(Si,Ge) nanocrystals (λscr). Values for λscr are proposed.
publishDate 2010
dc.date.none.fl_str_mv 2010-07
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/11336/14090
Moya, Javier Alberto; Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge; Elsevier Science; Journal Of Magnetism And Magnetic Materials; 322; 13; 7-2010; 1784-1792
0304-8853
url http://hdl.handle.net/11336/14090
identifier_str_mv Moya, Javier Alberto; Nanocrystals and amorphous matrix phase studies of Finemet-like alloys containing Ge; Elsevier Science; Journal Of Magnetism And Magnetic Materials; 322; 13; 7-2010; 1784-1792
0304-8853
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmmm.2009.12.030
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0304885309011871
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 Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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 13.221938

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