Nanostructuring of Iron Surfaces by Low-Energy Helium Ions | Zendy

İrem Tanyeli | Zendy; L. Marot | Zendy; M. C. M. van de Sanden | Zendy; G. De Temmerman | Zendy

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Nanostructuring of Iron Surfaces by Low-Energy Helium Ions

Author(s) -

İrem Tanyeli,

L. Marot,

M. C. M. van de Sanden,

G. De Temmerman

Publication year - 2014

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/am405624v

Subject(s) - materials science , ion , helium , nanotechnology , engineering physics , atomic physics , physics , quantum mechanics

The behavior of iron surfaces under helium plasma exposure is investigated as a function of surface temperature, plasma exposure time, and He ion flux. Different surface morphologies are observed for a large process parameter range and discussed in terms of temperature-related surface mechanisms. Surface modification is observed under low-He ion flux (in the range of 10(20) m(-2) s(-1)) irradiation, whereas fiberlike iron nanostructures are formed by exposing the surface to a high flux (in the range of 10(23) m(-2) s(-1)) of low-energy He ions at surface temperatures of 450-700 °C. The effects of surface temperature and plasma exposure time on nanostructures are studied. The results show that surface processing by high-flux low-energy He ion bombardment provides a size-controlled nanostructuring on iron surfaces.

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