Rare-earth spin-glasses with uniaxial anisotropy

Detalhes bibliográficos
Autor(a) principal: Baberschke, Klaus
Data de Publicação: 1984
Outros Autores: Pureur Neto, Paulo, Fert, Albert R., Wendler, R., Senoussi, Sadok
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/103998
Resumo: The properties of spin-glasses with uniaxial anisotropy are investigated by magnetization measurements on single crysta1s of Y and Se doped with Er, Dy, Tb, or Gd impurities. In alloys with strong anisotropy, spin-glass properties (susceptibility, cusp, irreversibility) appear only for fields along the c axis of the crystal (lsing-like systems) or only for fields in the basal plane (X- Y -like systems). The freezing temperature of the Ising-like systems is higher than that of the Heisenberg systems (alloys with Gd) by about a factor of 3. These results are in agreement with recent theoretical predictions. In alloys with small anisotropy, the irreversibility effects appear at the same temperature in longitudinal and transverse fields and we cannot identify the two-stage freezing predicted by the theory.
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spelling Baberschke, KlausPureur Neto, PauloFert, Albert R.Wendler, R.Senoussi, Sadok2014-10-01T02:10:19Z19840163-1829http://hdl.handle.net/10183/103998000115572The properties of spin-glasses with uniaxial anisotropy are investigated by magnetization measurements on single crysta1s of Y and Se doped with Er, Dy, Tb, or Gd impurities. In alloys with strong anisotropy, spin-glass properties (susceptibility, cusp, irreversibility) appear only for fields along the c axis of the crystal (lsing-like systems) or only for fields in the basal plane (X- Y -like systems). The freezing temperature of the Ising-like systems is higher than that of the Heisenberg systems (alloys with Gd) by about a factor of 3. These results are in agreement with recent theoretical predictions. In alloys with small anisotropy, the irreversibility effects appear at the same temperature in longitudinal and transverse fields and we cannot identify the two-stage freezing predicted by the theory.application/pdfengPhysical review. B, Condensed matter. New York. Vol. 29, no. 9 (May 1984), p. 4999-5006Física da matéria condensadaTerras raras : Vidros de spin : Vidros metalicosAnisotropia magnéticaMedidas fisicas : MagnetizacaoImpurezasPropriedades magnéticasRare-earth spin-glasses with uniaxial anisotropyEstrangeiroinfo: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:UFRGSORIGINAL000115572.pdf000115572.pdfTexto completo (inglês)application/pdf1191198http://www.lume.ufrgs.br/bitstream/10183/103998/1/000115572.pdff033f000290e526176504a6dfce44d4dMD51TEXT000115572.pdf.txt000115572.pdf.txtExtracted Texttext/plain33059http://www.lume.ufrgs.br/bitstream/10183/103998/2/000115572.pdf.txt4072f34f5ba0ed01627875ad6572a150MD52THUMBNAIL000115572.pdf.jpg000115572.pdf.jpgGenerated Thumbnailimage/jpeg2060http://www.lume.ufrgs.br/bitstream/10183/103998/3/000115572.pdf.jpg2d1fae57b87b8f1a9e1a9f91830c2f47MD5310183/1039982018-10-08 08:43:51.589oai:www.lume.ufrgs.br:10183/103998Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-08T11:43:51Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Rare-earth spin-glasses with uniaxial anisotropy
title Rare-earth spin-glasses with uniaxial anisotropy
spellingShingle Rare-earth spin-glasses with uniaxial anisotropy
Baberschke, Klaus
Física da matéria condensada
Terras raras : Vidros de spin : Vidros metalicos
Anisotropia magnética
Medidas fisicas : Magnetizacao
Impurezas
Propriedades magnéticas
title_short Rare-earth spin-glasses with uniaxial anisotropy
title_full Rare-earth spin-glasses with uniaxial anisotropy
title_fullStr Rare-earth spin-glasses with uniaxial anisotropy
title_full_unstemmed Rare-earth spin-glasses with uniaxial anisotropy
title_sort Rare-earth spin-glasses with uniaxial anisotropy
author Baberschke, Klaus
author_facet Baberschke, Klaus
Pureur Neto, Paulo
Fert, Albert R.
Wendler, R.
Senoussi, Sadok
author_role author
author2 Pureur Neto, Paulo
Fert, Albert R.
Wendler, R.
Senoussi, Sadok
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Baberschke, Klaus
Pureur Neto, Paulo
Fert, Albert R.
Wendler, R.
Senoussi, Sadok
dc.subject.por.fl_str_mv Física da matéria condensada
Terras raras : Vidros de spin : Vidros metalicos
Anisotropia magnética
Medidas fisicas : Magnetizacao
Impurezas
Propriedades magnéticas
topic Física da matéria condensada
Terras raras : Vidros de spin : Vidros metalicos
Anisotropia magnética
Medidas fisicas : Magnetizacao
Impurezas
Propriedades magnéticas
description The properties of spin-glasses with uniaxial anisotropy are investigated by magnetization measurements on single crysta1s of Y and Se doped with Er, Dy, Tb, or Gd impurities. In alloys with strong anisotropy, spin-glass properties (susceptibility, cusp, irreversibility) appear only for fields along the c axis of the crystal (lsing-like systems) or only for fields in the basal plane (X- Y -like systems). The freezing temperature of the Ising-like systems is higher than that of the Heisenberg systems (alloys with Gd) by about a factor of 3. These results are in agreement with recent theoretical predictions. In alloys with small anisotropy, the irreversibility effects appear at the same temperature in longitudinal and transverse fields and we cannot identify the two-stage freezing predicted by the theory.
publishDate 1984
dc.date.issued.fl_str_mv 1984
dc.date.accessioned.fl_str_mv 2014-10-01T02:10:19Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/103998
dc.identifier.issn.pt_BR.fl_str_mv 0163-1829
dc.identifier.nrb.pt_BR.fl_str_mv 000115572
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url http://hdl.handle.net/10183/103998
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. B, Condensed matter. New York. Vol. 29, no. 9 (May 1984), p. 4999-5006
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