Alliages magnétiques dilués yttrium-terre rare et scandium-terre rare
| Ano de defesa: | 1984 |
|---|---|
| Autor(a) principal: | |
| Orientador(a): | |
| Banca de defesa: | |
| 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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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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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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publishedVersion |
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http://hdl.handle.net/10183/148796 |
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000128660 |
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fra |
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fra |
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openAccess |
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application/pdf |
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