Ion-irradiation-induced mixing, interface broadening and period dilation in Pt/C multilayers

Pt/C multilayers of nanometric dimension have been irradiated with 2-MeV-Au ions to a fluence of 1×1014 ions/cm2 and analyzed by x-ray reflectivity and x-ray standing wave measurements. The multilayer period has expanded by ∼9%, the expansion of the Pt layers being larger than that of the C layers....

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Bibliographic Details
Published in:Applied physics letters 2001-07, Vol.79 (4), p.467-469
Main Authors: Ghose, S. K., Goswami, D. K., Rout, B., Dev, B. N., Kuri, G., Materlik, G.
Format: Article
Language:English
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Summary:Pt/C multilayers of nanometric dimension have been irradiated with 2-MeV-Au ions to a fluence of 1×1014 ions/cm2 and analyzed by x-ray reflectivity and x-ray standing wave measurements. The multilayer period has expanded by ∼9%, the expansion of the Pt layers being larger than that of the C layers. Ion-induced displacement of atoms across the interfaces led to an increased interface roughness and an increase of 2 at. % Pt in C layers. Monte Carlo simulations for ion-induced atomic displacement have been used to explain the observed effects.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1384901