Growth and sacrificial oxidation of transition metal nanolayers

SURFACE SCIENCE

卷:603

Article

Tsarfati, Tim¹  Zoethout, Erwin¹  van de Kruijs, Robbert¹  Bijkerk, Fred^1,2 

[1] EURATOM, FOM, Inst Plasma Phys Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands

[2] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands

关键词: d-Metals;    Islanding;    Sacrificial oxidation;    ARPES;    Multilayers;   

DOI  :  10.1016/j.susc.2009.02.027

来源: Elsevier

【 摘 要 】

Growth and oxidation of Au, Pt, Pd, Rh, Cu, Ru, Ni and Co layers of 0.3-4.3 nm thickness on Mo have been investigated with ARPES and AFM. Co and Ni layers oxidize while the Mo remains metallic. For nobler metals, the on top O and oxidation state of subsurface Mo increase, suggesting sacrificial e(-) donation by Mo. Au and Cu, in spite of their significantly lower surface free energy, grow in islands on Mo and actually promote Mo oxidation. Applications of the sacrificial oxidation in nanometer thin layers exist in a range of nanoscopic devices, such as nano-electronics and protection of e.g. multilayer X-ray optics for astronomy, medicine and lithography. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free