Compositional and structural medium energy ion scattering study of the temperature mediated diffusion determination at the Co/V interface in Co/V/MgO(100)

Díaz, M.; Martínez, L.; Román, E.; Redondo-Cubero, A.; Muñoz-Márquez, M.A.; van der Laan, G.; Telling, N.D.; Bailey, P.; Noakes, T.C.Q.; Huttel, Y.

Abstract

The impact of annealing at 300 °C on the elemental composition and the atomic structure of the Co/V interface in the 2.5 Å Co/70 Å V/MgO (100) system has been investigated by medium energy ion scattering (MEIS) using 100 keV He+ ions. By combining the experimental MEIS results with simulations we show that, while the Co/V interface is abrupt for the system kept at room temperature, annealing at 300 °C induces a strong interdiffusion leading to a Co0.5V0.5 surface bcc alloy with a high degree of disorder. Additionally, the MEIS data suggest that the surface of the annealed system is slightly rumpled by ~ 0.2 Å.

Citation

Díaz, M., Martínez, L., Román, E., Redondo-Cubero, A., Muñoz-Márquez, M., van der Laan, G., Telling, N., Bailey, P., Noakes, T., & Huttel, Y. (2010). Compositional and structural medium energy ion scattering study of the temperature mediated diffusion determination at the Co/V interface in Co/V/MgO(100). Surface Science, 604(23-24), 2177-2183. https://doi.org/10.1016/j.susc.2010.09.011

• Journal Article Type: Article
• Acceptance Date: Sep 15, 2010
• Online Publication Date: Sep 22, 2010
• Publication Date: 2010-11
• Deposit Date: May 22, 2024
• Journal: Surface Science
• Print ISSN: 0039-6028
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 604
• Issue: 23-24
• Pages: 2177-2183
• DOI: https://doi.org/10.1016/j.susc.2010.09.011
• Keywords: Medium energy ion scattering (MEIS); Interdiffusion; Interface; Composition; Layer; Structure; Disorder
• Public URL: https://keele-repository.worktribe.com/output/831263