Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]

Detalhes bibliográficos
Autor(a) principal: Geshev, Julian Penkov
Data de Publicação: 2009
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/206098
Resumo: Ang et al. J. Appl. Phys. 104, 023914 2008 recently reported magnetization hysteresis loops shifted along both field and magnetization axes of layered cobaltites. The authors claimed that these shifts are characteristics of the exchange-bias phenomenon associated with coupling between ferromagnetic and spin-glass regions. The present comment affirms that their work shows no proofs supporting the observation of exchange bias since, due to lack of magnetic reversibility at high magnetic fields, all hysteresis loops displaced from the origin are actually minor loops naturally shifted along both axes.
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spelling Geshev, Julian Penkov2020-02-19T04:09:51Z20090021-8979http://hdl.handle.net/10183/206098000704274Ang et al. J. Appl. Phys. 104, 023914 2008 recently reported magnetization hysteresis loops shifted along both field and magnetization axes of layered cobaltites. The authors claimed that these shifts are characteristics of the exchange-bias phenomenon associated with coupling between ferromagnetic and spin-glass regions. The present comment affirms that their work shows no proofs supporting the observation of exchange bias since, due to lack of magnetic reversibility at high magnetic fields, all hysteresis loops displaced from the origin are actually minor loops naturally shifted along both axes.application/pdfengJournal of applied physics. Melville. Vol. 105, no. 6 (Mar. 2009), 066108, 2 p.Física da matéria condensadaMagnetismoHisterese magnéticaMateriais magnéticosPropriedades magnéticasComment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]Estrangeiroinfo: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:UFRGSTEXT000704274.pdf.txt000704274.pdf.txtExtracted Texttext/plain7322http://www.lume.ufrgs.br/bitstream/10183/206098/2/000704274.pdf.txt671b249aec7665737cc9f73b2d2e4cd2MD52ORIGINAL000704274.pdfTexto completo (inglês)application/pdf192423http://www.lume.ufrgs.br/bitstream/10183/206098/1/000704274.pdf18574f7dee6ef4c2c271e61e6a082470MD5110183/2060982023-09-20 03:33:42.609099oai:www.lume.ufrgs.br:10183/206098Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-20T06:33:42Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]
title Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]
spellingShingle Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]
Geshev, Julian Penkov
Física da matéria condensada
Magnetismo
Histerese magnética
Materiais magnéticos
Propriedades magnéticas
title_short Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]
title_full Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]
title_fullStr Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]
title_full_unstemmed Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]
title_sort Comment on “Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4” [J. Appl. Phys. 104, 023914 (2008)]
author Geshev, Julian Penkov
author_facet Geshev, Julian Penkov
author_role author
dc.contributor.author.fl_str_mv Geshev, Julian Penkov
dc.subject.por.fl_str_mv Física da matéria condensada
Magnetismo
Histerese magnética
Materiais magnéticos
Propriedades magnéticas
topic Física da matéria condensada
Magnetismo
Histerese magnética
Materiais magnéticos
Propriedades magnéticas
description Ang et al. J. Appl. Phys. 104, 023914 2008 recently reported magnetization hysteresis loops shifted along both field and magnetization axes of layered cobaltites. The authors claimed that these shifts are characteristics of the exchange-bias phenomenon associated with coupling between ferromagnetic and spin-glass regions. The present comment affirms that their work shows no proofs supporting the observation of exchange bias since, due to lack of magnetic reversibility at high magnetic fields, all hysteresis loops displaced from the origin are actually minor loops naturally shifted along both axes.
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dc.date.issued.fl_str_mv 2009
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dc.identifier.nrb.pt_BR.fl_str_mv 000704274
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dc.relation.ispartof.pt_BR.fl_str_mv Journal of applied physics. Melville. Vol. 105, no. 6 (Mar. 2009), 066108, 2 p.
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