Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare

Detalhes bibliográficos
Ano de defesa: 1984
Autor(a) principal: Pureur Neto, Paulo
Orientador(a): Fert, Albert R.
Banca de defesa: Não Informado pela instituição
Tipo de documento: Tese
Tipo de acesso: Acesso aberto
Idioma: fra
Instituição de defesa: Não Informado pela instituição
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://hdl.handle.net/10183/148796
Resumo: This thesis studies the magnetoelastic, transport and magnetic properties of single crystals of yttrium and scandium dopped with rare earth magnetic impurities. From our measurements of magnetostriction on dilute alloys we derive the magnetoelastic coefficients of the interaction between isolated ions and lattice strains. Our magnetoresistance measurements give the exchange and quadrupole coefficients of the interaction of isolated ions with the conduction electrons. The aim of our magnetic measurements is mainly to study the spin glass properties at low temperatures. The yttrium-rare earth and scandiumorare earth dilute alloys are interesting systems to probe the typical properties predicted by mean field theory for spin glasses with uniaxial crystal field.
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spelling Pureur Neto, PauloUniversite de Paris-Sud-D'OrsayFert, Albert R.2016-10-04T02:16:14Z1984http://hdl.handle.net/10183/148796000128660This thesis studies the magnetoelastic, transport and magnetic properties of single crystals of yttrium and scandium dopped with rare earth magnetic impurities. From our measurements of magnetostriction on dilute alloys we derive the magnetoelastic coefficients of the interaction between isolated ions and lattice strains. Our magnetoresistance measurements give the exchange and quadrupole coefficients of the interaction of isolated ions with the conduction electrons. The aim of our magnetic measurements is mainly to study the spin glass properties at low temperatures. The yttrium-rare earth and scandiumorare earth dilute alloys are interesting systems to probe the typical properties predicted by mean field theory for spin glasses with uniaxial crystal field.application/pdffraFísica da matéria condensadaPropriedades magneticas das substanciasElasticidadeMedidas fisicas : MagnetostriccaoVidros de spinPropriedades de transporteMagnetorresistênciaLigas diluidas : Terras rarasAlliages magnétiques dilués yttrium-terre rare et scandium-terre rareinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisUniversite de Paris-Sud-D'OrsayOrsay, França1984doutoradoinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000128660.pdf000128660.pdfTexto completo (francês)application/pdf6353368http://www.lume.ufrgs.br/bitstream/10183/148796/1/000128660.pdf42a2b4305029e5ae02b50d7c76480413MD51TEXT000128660.pdf.txt000128660.pdf.txtExtracted Texttext/plain288965http://www.lume.ufrgs.br/bitstream/10183/148796/2/000128660.pdf.txtfe1f3d6f5d92b657b4c5be0937e28770MD52THUMBNAIL000128660.pdf.jpg000128660.pdf.jpgGenerated Thumbnailimage/jpeg1226http://www.lume.ufrgs.br/bitstream/10183/148796/3/000128660.pdf.jpg32c3bee4c9071fb7767314fd00a66a9eMD5310183/1487962021-05-07 04:43:49.14053oai:www.lume.ufrgs.br:10183/148796Biblioteca Digital de Teses e Dissertaçõeshttps://lume.ufrgs.br/handle/10183/2PUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.br||lume@ufrgs.bropendoar:18532021-05-07T07:43:49Biblioteca Digital de Teses e Dissertações da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
title Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
spellingShingle Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
Pureur Neto, Paulo
Física da matéria condensada
Propriedades magneticas das substancias
Elasticidade
Medidas fisicas : Magnetostriccao
Vidros de spin
Propriedades de transporte
Magnetorresistência
Ligas diluidas : Terras raras
title_short Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
title_full Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
title_fullStr Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
title_full_unstemmed Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
title_sort Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
author Pureur Neto, Paulo
author_facet Pureur Neto, Paulo
author_role author
dc.contributor.other.pt_BR.fl_str_mv Universite de Paris-Sud-D'Orsay
dc.contributor.author.fl_str_mv Pureur Neto, Paulo
dc.contributor.advisor1.fl_str_mv Fert, Albert R.
contributor_str_mv Fert, Albert R.
dc.subject.por.fl_str_mv Física da matéria condensada
Propriedades magneticas das substancias
Elasticidade
Medidas fisicas : Magnetostriccao
Vidros de spin
Propriedades de transporte
Magnetorresistência
Ligas diluidas : Terras raras
topic Física da matéria condensada
Propriedades magneticas das substancias
Elasticidade
Medidas fisicas : Magnetostriccao
Vidros de spin
Propriedades de transporte
Magnetorresistência
Ligas diluidas : Terras raras
description This thesis studies the magnetoelastic, transport and magnetic properties of single crystals of yttrium and scandium dopped with rare earth magnetic impurities. From our measurements of magnetostriction on dilute alloys we derive the magnetoelastic coefficients of the interaction between isolated ions and lattice strains. Our magnetoresistance measurements give the exchange and quadrupole coefficients of the interaction of isolated ions with the conduction electrons. The aim of our magnetic measurements is mainly to study the spin glass properties at low temperatures. The yttrium-rare earth and scandiumorare earth dilute alloys are interesting systems to probe the typical properties predicted by mean field theory for spin glasses with uniaxial crystal field.
publishDate 1984
dc.date.issued.fl_str_mv 1984
dc.date.accessioned.fl_str_mv 2016-10-04T02:16:14Z
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