Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers
dc.contributor.author | Graff, Ismael Leandro | pt_BR |
dc.contributor.author | Geshev, Julian Penkov | pt_BR |
dc.contributor.author | Teixeira, Sergio Ribeiro | pt_BR |
dc.contributor.author | Amaral, Livio | pt_BR |
dc.contributor.author | Traverse, Agnes | pt_BR |
dc.date.accessioned | 2014-06-06T02:06:26Z | pt_BR |
dc.date.issued | 2008 | pt_BR |
dc.identifier.issn | 0021-8979 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/96103 | pt_BR |
dc.description.abstract | 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. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Journal of applied physics. Melville. Vol. 103, no. 3 (Feb. 2008), 033505 11p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Irradiação | pt_BR |
dc.subject | Criptonio | pt_BR |
dc.subject | Multicamadas magnéticas | pt_BR |
dc.title | Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000630111 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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