Abstract
The faceting of Pd/W(111) to form nanoscale three-sided pyramids with {011} facets has been observed using a scanning tunneling microscope (STM). In contrast to the well-documented {112} faceting, which can transform the entire Pd/W(111) surface to a morphology composed completely of pyramidal {112} facets, the {011} faceting of Pd/W(111) occurs in coexistence with {112} faceting upon prolonged annealing. While {112} facets are found to grow in size (ranging from $\ensuremath{\sim}3$ to 15 nm) with increasing annealing temperatures, the dimensions of {011} facets appear to be limited to $\ensuremath{\sim}2.5 \mathrm{nm}.$ The coexistence of two types of pyramidal facets is consistent with energetic considerations based on first-principles calculations. The difference in their typical sizes is, on the other hand, interpreted as an evidence for kinetic factors in the faceting processes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
