Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/96103 |
Resumo: | The effects of Kr ion irradiation of FexCo1−x /Cu multilayers are investigated by means of magnetic and x-ray measurements. The irradiation was performed at room temperature with 600 keV of Kr, and the fluences were ranged from 1x1015 to 5x1015 ions/cm². X-ray diffraction patterns show that the irradiation was able to produce a significant grain growth and, at the same time, it triggered a strain release. The x-ray absorption measurements around Fe K edge have shown that the FeCo environment changed from bcc, for the as-deposited multilayer, to fcc after appropriate fluence, depending on the Cu thickness and on the Fe/Co content. For 50 Å of Cu, the phase transformation occurs even for the lowest fluence, regardless the Fe/Co concentration. For 25 Å of Cu, it depends on the Fe/Co concentration. After irradiation, the saturation magnetization suffers a strong decrease, especially for 50 Å of Cu. The temperature for the onset of irreversibility also decreases with irradiation, again being the effect stronger for 50 Å of Cu. These data indicate that Kr irradiation induced mixing between Cu and FeCo, even though Cu is immiscible with Fe and Co in the equilibrium state. |
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Graff, Ismael LeandroGeshev, Julian PenkovTeixeira, Sergio RibeiroAmaral, LivioTraverse, Agnes2014-06-06T02:06:26Z20080021-8979http://hdl.handle.net/10183/96103000630111The effects of Kr ion irradiation of FexCo1−x /Cu multilayers are investigated by means of magnetic and x-ray measurements. The irradiation was performed at room temperature with 600 keV of Kr, and the fluences were ranged from 1x1015 to 5x1015 ions/cm². X-ray diffraction patterns show that the irradiation was able to produce a significant grain growth and, at the same time, it triggered a strain release. The x-ray absorption measurements around Fe K edge have shown that the FeCo environment changed from bcc, for the as-deposited multilayer, to fcc after appropriate fluence, depending on the Cu thickness and on the Fe/Co content. For 50 Å of Cu, the phase transformation occurs even for the lowest fluence, regardless the Fe/Co concentration. For 25 Å of Cu, it depends on the Fe/Co concentration. After irradiation, the saturation magnetization suffers a strong decrease, especially for 50 Å of Cu. The temperature for the onset of irreversibility also decreases with irradiation, again being the effect stronger for 50 Å of Cu. These data indicate that Kr irradiation induced mixing between Cu and FeCo, even though Cu is immiscible with Fe and Co in the equilibrium state.application/pdfengJournal of applied physics. Melville. Vol. 103, no. 3 (Feb. 2008), 033505 11p.IrradiaçãoCriptonioMulticamadas magnéticasAtomic level mixing induced by Kr irradiation of FeCo/Cu multilayersEstrangeiroinfo: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:UFRGSORIGINAL000630111.pdf000630111.pdfTexto completo (inglês)application/pdf1333648http://www.lume.ufrgs.br/bitstream/10183/96103/1/000630111.pdfe364c295b18f81662e58739b82c91bd4MD51TEXT000630111.pdf.txt000630111.pdf.txtExtracted Texttext/plain46649http://www.lume.ufrgs.br/bitstream/10183/96103/2/000630111.pdf.txt6dfb93150c9ca1890e7674fd26e36353MD52THUMBNAIL000630111.pdf.jpg000630111.pdf.jpgGenerated Thumbnailimage/jpeg1563http://www.lume.ufrgs.br/bitstream/10183/96103/3/000630111.pdf.jpg7eb3ffb625005035a79327de3c54dfcbMD5310183/961032023-09-20 03:30:02.956547oai:www.lume.ufrgs.br:10183/96103Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-20T06:30:02Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers |
title |
Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers |
spellingShingle |
Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers Graff, Ismael Leandro Irradiação Criptonio Multicamadas magnéticas |
title_short |
Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers |
title_full |
Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers |
title_fullStr |
Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers |
title_full_unstemmed |
Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers |
title_sort |
Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers |
author |
Graff, Ismael Leandro |
author_facet |
Graff, Ismael Leandro Geshev, Julian Penkov Teixeira, Sergio Ribeiro Amaral, Livio Traverse, Agnes |
author_role |
author |
author2 |
Geshev, Julian Penkov Teixeira, Sergio Ribeiro Amaral, Livio Traverse, Agnes |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Graff, Ismael Leandro Geshev, Julian Penkov Teixeira, Sergio Ribeiro Amaral, Livio Traverse, Agnes |
dc.subject.por.fl_str_mv |
Irradiação Criptonio Multicamadas magnéticas |
topic |
Irradiação Criptonio Multicamadas magnéticas |
description |
The effects of Kr ion irradiation of FexCo1−x /Cu multilayers are investigated by means of magnetic and x-ray measurements. The irradiation was performed at room temperature with 600 keV of Kr, and the fluences were ranged from 1x1015 to 5x1015 ions/cm². X-ray diffraction patterns show that the irradiation was able to produce a significant grain growth and, at the same time, it triggered a strain release. The x-ray absorption measurements around Fe K edge have shown that the FeCo environment changed from bcc, for the as-deposited multilayer, to fcc after appropriate fluence, depending on the Cu thickness and on the Fe/Co content. For 50 Å of Cu, the phase transformation occurs even for the lowest fluence, regardless the Fe/Co concentration. For 25 Å of Cu, it depends on the Fe/Co concentration. After irradiation, the saturation magnetization suffers a strong decrease, especially for 50 Å of Cu. The temperature for the onset of irreversibility also decreases with irradiation, again being the effect stronger for 50 Å of Cu. These data indicate that Kr irradiation induced mixing between Cu and FeCo, even though Cu is immiscible with Fe and Co in the equilibrium state. |
publishDate |
2008 |
dc.date.issued.fl_str_mv |
2008 |
dc.date.accessioned.fl_str_mv |
2014-06-06T02:06:26Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/96103 |
dc.identifier.issn.pt_BR.fl_str_mv |
0021-8979 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000630111 |
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0021-8979 000630111 |
url |
http://hdl.handle.net/10183/96103 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of applied physics. Melville. Vol. 103, no. 3 (Feb. 2008), 033505 11p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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