Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies

Detalhes bibliográficos
Autor(a) principal: Geshev, Julian Penkov
Data de Publicação: 1999
Outros Autores: Mikhov, Mihail, Schmidt, Joao Edgar
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/95424
Resumo: Magnetization and remanent magnetization curves for noninteracting single-domain particles whose anisotropy is made up of a cubic magnetocrystalline and an uniaxial components were investigated. For a given cubic anisotropy, the saturation remanence, coercivity, remanence coercivity, and coercivity factor values have been obtained for several different uniaxial anisotropy directions. The corresponding δM plots have been constructed for initially thermal or ac demagnetized systems, and a great variety of their shapes has been obtained when the uniaxial anisotropy does not dominate. Coercivity factor values rather higher than those for pure uniaxial or cubic anisotropy particles have been obtained as well, even for already dominating uniaxial anisotropy for some uniaxial anisotropy directions. Thus, it has been shown that one may not safely draw conclusions about interactions from deviations from the zero line in the δM plots or coercivity factor values for particles with competing anisotropies without specific analysis for any particular case.
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spelling Geshev, Julian PenkovMikhov, MihailSchmidt, Joao Edgar2014-05-20T02:04:56Z19990021-8979http://hdl.handle.net/10183/95424000269368Magnetization and remanent magnetization curves for noninteracting single-domain particles whose anisotropy is made up of a cubic magnetocrystalline and an uniaxial components were investigated. For a given cubic anisotropy, the saturation remanence, coercivity, remanence coercivity, and coercivity factor values have been obtained for several different uniaxial anisotropy directions. The corresponding δM plots have been constructed for initially thermal or ac demagnetized systems, and a great variety of their shapes has been obtained when the uniaxial anisotropy does not dominate. Coercivity factor values rather higher than those for pure uniaxial or cubic anisotropy particles have been obtained as well, even for already dominating uniaxial anisotropy for some uniaxial anisotropy directions. Thus, it has been shown that one may not safely draw conclusions about interactions from deviations from the zero line in the δM plots or coercivity factor values for particles with competing anisotropies without specific analysis for any particular case.application/pdfengJournal of applied physics. Woodbury. Vol. 85, no. 10 (May 1999), p. 7321-7327Anisotropia magnéticaCampos magnéticosPartículas magnéticasMagnetizaçãoRemanent magnetization plots of fine particles with competing cubic and uniaxial anisotropiesEstrangeiroinfo: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:UFRGSORIGINAL000269368.pdf000269368.pdfTexto completo (inglês)application/pdf294221http://www.lume.ufrgs.br/bitstream/10183/95424/1/000269368.pdf28307192a53d9ff26bf23618dc19253bMD51TEXT000269368.pdf.txt000269368.pdf.txtExtracted Texttext/plain27871http://www.lume.ufrgs.br/bitstream/10183/95424/2/000269368.pdf.txta06a8fe4b23d262b4971897127b0c246MD52THUMBNAIL000269368.pdf.jpg000269368.pdf.jpgGenerated Thumbnailimage/jpeg1570http://www.lume.ufrgs.br/bitstream/10183/95424/3/000269368.pdf.jpg19da4ff3050fbb0f473a619323ff6e2bMD5310183/954242023-09-21 03:41:15.399655oai:www.lume.ufrgs.br:10183/95424Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2023-09-21T06:41:15Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies
title Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies
spellingShingle Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies
Geshev, Julian Penkov
Anisotropia magnética
Campos magnéticos
Partículas magnéticas
Magnetização
title_short Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies
title_full Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies
title_fullStr Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies
title_full_unstemmed Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies
title_sort Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies
author Geshev, Julian Penkov
author_facet Geshev, Julian Penkov
Mikhov, Mihail
Schmidt, Joao Edgar
author_role author
author2 Mikhov, Mihail
Schmidt, Joao Edgar
author2_role author
author
dc.contributor.author.fl_str_mv Geshev, Julian Penkov
Mikhov, Mihail
Schmidt, Joao Edgar
dc.subject.por.fl_str_mv Anisotropia magnética
Campos magnéticos
Partículas magnéticas
Magnetização
topic Anisotropia magnética
Campos magnéticos
Partículas magnéticas
Magnetização
description Magnetization and remanent magnetization curves for noninteracting single-domain particles whose anisotropy is made up of a cubic magnetocrystalline and an uniaxial components were investigated. For a given cubic anisotropy, the saturation remanence, coercivity, remanence coercivity, and coercivity factor values have been obtained for several different uniaxial anisotropy directions. The corresponding δM plots have been constructed for initially thermal or ac demagnetized systems, and a great variety of their shapes has been obtained when the uniaxial anisotropy does not dominate. Coercivity factor values rather higher than those for pure uniaxial or cubic anisotropy particles have been obtained as well, even for already dominating uniaxial anisotropy for some uniaxial anisotropy directions. Thus, it has been shown that one may not safely draw conclusions about interactions from deviations from the zero line in the δM plots or coercivity factor values for particles with competing anisotropies without specific analysis for any particular case.
publishDate 1999
dc.date.issued.fl_str_mv 1999
dc.date.accessioned.fl_str_mv 2014-05-20T02:04:56Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/95424
dc.identifier.issn.pt_BR.fl_str_mv 0021-8979
dc.identifier.nrb.pt_BR.fl_str_mv 000269368
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url http://hdl.handle.net/10183/95424
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Journal of applied physics. Woodbury. Vol. 85, no. 10 (May 1999), p. 7321-7327
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