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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F12%3A10125670%21RIV13-MSM-11320___
rdf:type
skos:Concept n16:Vysledek
rdfs:seeAlso
http://dx.doi.org/10.1016/j.tsf.2012.07.128
dcterms:description
Interfacial changes in rf sputtered Pt/Co(2.6 nm)/Pt sandwiches grown onto sapphire (Al2O3) substrates induced by irradiation of 30 keV Ga+ ions at low dose (10(14) ions/cm(2)) have been investigated by magneto-optic polar Kerr rotation (PKR) spectroscopy between 1 and 5 eV. The irradiation resulted in an increase of PKR over the whole spectral range. The measured PKR spectra were compared with those computed from the transfer matrix formalism using known polar Kerr rotation and ellipticity spectra for Co and five CoxPt1-x alloys. The comparison between measured and computed PKR spectra provided an in-depth profile of Co and Pt ion distributions across the sandwich and confirmed that irradiation favors alloying in the vicinity of the two interfaces. These results are in a good agreement with the profile evaluated independently by TRIDYN simulations. Our results evidence an asymmetry in the irradiation effect due to an excess of Pt-Co alloying at the upper interface. Moreover, the observation of a negative PKR peak around 3.2 eV states definitively the presence of a chemically ordered Co0.75Pt0.25 alloy phase inside the irradiated film structure. (C) 2012 Elsevier B.V. All rights reserved. Interfacial changes in rf sputtered Pt/Co(2.6 nm)/Pt sandwiches grown onto sapphire (Al2O3) substrates induced by irradiation of 30 keV Ga+ ions at low dose (10(14) ions/cm(2)) have been investigated by magneto-optic polar Kerr rotation (PKR) spectroscopy between 1 and 5 eV. The irradiation resulted in an increase of PKR over the whole spectral range. The measured PKR spectra were compared with those computed from the transfer matrix formalism using known polar Kerr rotation and ellipticity spectra for Co and five CoxPt1-x alloys. The comparison between measured and computed PKR spectra provided an in-depth profile of Co and Pt ion distributions across the sandwich and confirmed that irradiation favors alloying in the vicinity of the two interfaces. These results are in a good agreement with the profile evaluated independently by TRIDYN simulations. Our results evidence an asymmetry in the irradiation effect due to an excess of Pt-Co alloying at the upper interface. Moreover, the observation of a negative PKR peak around 3.2 eV states definitively the presence of a chemically ordered Co0.75Pt0.25 alloy phase inside the irradiated film structure. (C) 2012 Elsevier B.V. All rights reserved.
dcterms:title
Effect of Ga+ irradiation on the magneto-optic spectra of Pt/Co/Pt sandwiches Effect of Ga+ irradiation on the magneto-optic spectra of Pt/Co/Pt sandwiches
skos:prefLabel
Effect of Ga+ irradiation on the magneto-optic spectra of Pt/Co/Pt sandwiches Effect of Ga+ irradiation on the magneto-optic spectra of Pt/Co/Pt sandwiches
skos:notation
RIV/00216208:11320/12:10125670!RIV13-MSM-11320___
n16:predkladatel
n17:orjk%3A11320
n3:aktivita
n14:V
n3:aktivity
V
n3:cisloPeriodika
24
n3:dodaniDat
n5:2013
n3:domaciTvurceVysledku
n12:7335644 n12:7388578 n12:2586614
n3:druhVysledku
n9:J
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
133057
n3:idVysledku
RIV/00216208:11320/12:10125670
n3:jazykVysledku
n20:eng
n3:klicovaSlova
Magneto-optical Kerr spectroscopy, Pt/Co thin films, Metal and metal alloys, Ion radiation effect; PD; ALLOY; ANISOTROPY; FILMS; CO; CO/PT MULTILAYERS; KERR SPECTROSCOPY; MAGNETIC-PROPERTIES; ION-BEAM IRRADIATION; TRANSMISSION ELECTRON-MICROSCOPY
n3:klicoveSlovo
n6:ANISOTROPY n6:CO%2FPT%20MULTILAYERS n6:Pt%2FCo%20thin%20films n6:ALLOY n6:PD n6:MAGNETIC-PROPERTIES n6:Metal%20and%20metal%20alloys n6:KERR%20SPECTROSCOPY n6:ION-BEAM%20IRRADIATION n6:CO n6:TRANSMISSION%20ELECTRON-MICROSCOPY n6:FILMS n6:Ion%20radiation%20effect n6:Magneto-optical%20Kerr%20spectroscopy
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[46F408DFE1FF]
n3:nazevZdroje
Thin Solid Films
n3:obor
n18:BM
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
9
n3:rokUplatneniVysledku
n5:2012
n3:svazekPeriodika
520
n3:tvurceVysledku
Maziewski, A. Mougin, A. Veis, Martin Mazalski, P. Fassbender, J. Ferre, J. Jakubisová, Eva Višňovský, Štefan Liedke, M. O.
n3:wos
000308691700023
s:issn
0040-6090
s:numberOfPages
4
n15:doi
10.1016/j.tsf.2012.07.128
n8:organizacniJednotka
11320