Nano-terracing on polycrystalline palladium induced via simple heat treatment

Nano-terracing on polycrystalline palladium induced via simple heat treatment

This paper concerns formation of terraces on polycrystalline Pd, via heat treatments followed by quenching with gas jets. The driving force for terrace formation is the crystallographic anisotropy of the surface energy. Information is presented regarding the surface topography of the terraces and of...

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Bibliographic Details
Published in:Scripta materialia Vol. 130; pp. 17 - 21
Main Authors: Sobral, JM, Clyne, TW, Rezk, R, Markaki, AE
Format: Journal Article
Language:English
Published: Elsevier Ltd 15-03-2017
Subjects:
AFM
Oxides
Surface diffusion
Surface energy
Terraces
AFM
Oxides
Surface diffusion
Terraces
Surface energy
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Summary:This paper concerns formation of terraces on polycrystalline Pd, via heat treatments followed by quenching with gas jets. The driving force for terrace formation is the crystallographic anisotropy of the surface energy. Information is presented regarding the surface topography of the terraces and of the grain boundary regions. Typically, the step heights are about 50nm and the widths of the faces between them are around 1μm. It is shown that a measure of control can be exercised over the structures produced, although they are determined by a complex interplay of related effects. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2016.11.007