Effect of Ga+ irradiation on the magneto-optic spectra of Pt/Co/Pt sandwiches

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10125670" target="_blank" >RIV/00216208:11320/12:10125670 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.tsf.2012.07.128" target="_blank" >http://dx.doi.org/10.1016/j.tsf.2012.07.128</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tsf.2012.07.128" target="_blank" >10.1016/j.tsf.2012.07.128</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Ga+ irradiation on the magneto-optic spectra of Pt/Co/Pt sandwiches

Popis výsledku v původním jazyce

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 forCo 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 obser

Název v anglickém jazyce

Effect of Ga+ irradiation on the magneto-optic spectra of Pt/Co/Pt sandwiches

Popis výsledku anglicky

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 forCo 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 obser

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Thin Solid Films

ISSN

0040-6090

e-ISSN

—

Svazek periodika

520

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

4

Strana od-do

7169-7172

Kód UT WoS článku

000308691700023

EID výsledku v databázi Scopus

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