Cargando…
Alloying and Structure of Ultrathin Gallium Films on the (111) and (110) Surfaces of Palladium
[Image: see text] Growth, thermal stability, and structure of ultrathin gallium films on Pd(111) and Pd(110) are investigated by low-energy ion scattering and low-energy electron diffraction. Common to both surface orientations are growth of disordered Ga films at coverages of a few monolayers (T =...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2013
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3786520/ https://www.ncbi.nlm.nih.gov/pubmed/24089625 http://dx.doi.org/10.1021/jp407337q |
_version_ | 1782477753039192064 |
---|---|
author | Stadlmayr, Werner Huber, Veronika Penner, Simon Klötzer, Bernhard Memmel, Norbert |
author_facet | Stadlmayr, Werner Huber, Veronika Penner, Simon Klötzer, Bernhard Memmel, Norbert |
author_sort | Stadlmayr, Werner |
collection | PubMed |
description | [Image: see text] Growth, thermal stability, and structure of ultrathin gallium films on Pd(111) and Pd(110) are investigated by low-energy ion scattering and low-energy electron diffraction. Common to both surface orientations are growth of disordered Ga films at coverages of a few monolayers (T = 150 K), onset of alloy formation at low temperatures (T ≈ 200 K), and formation of a metastable, mostly disordered 1:1 surface alloy at temperatures around 400–500 K. At higher temperatures a Ga surface fraction of ∼0.3 is slightly stabilized on Pd(111), which we suggest to be related to the formation of Pd(2)Ga bulk-like films. While on Pd(110) only a Pd-up/Ga-down buckled surface was observed, an inversion of buckling was observed on Pd(111) upon heating. Similarities and differences to the related Zn/Pd system are discussed. |
format | Online Article Text |
id | pubmed-3786520 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-37865202013-09-30 Alloying and Structure of Ultrathin Gallium Films on the (111) and (110) Surfaces of Palladium Stadlmayr, Werner Huber, Veronika Penner, Simon Klötzer, Bernhard Memmel, Norbert J Phys Chem C Nanomater Interfaces [Image: see text] Growth, thermal stability, and structure of ultrathin gallium films on Pd(111) and Pd(110) are investigated by low-energy ion scattering and low-energy electron diffraction. Common to both surface orientations are growth of disordered Ga films at coverages of a few monolayers (T = 150 K), onset of alloy formation at low temperatures (T ≈ 200 K), and formation of a metastable, mostly disordered 1:1 surface alloy at temperatures around 400–500 K. At higher temperatures a Ga surface fraction of ∼0.3 is slightly stabilized on Pd(111), which we suggest to be related to the formation of Pd(2)Ga bulk-like films. While on Pd(110) only a Pd-up/Ga-down buckled surface was observed, an inversion of buckling was observed on Pd(111) upon heating. Similarities and differences to the related Zn/Pd system are discussed. American Chemical Society 2013-09-02 2013-09-26 /pmc/articles/PMC3786520/ /pubmed/24089625 http://dx.doi.org/10.1021/jp407337q Text en Copyright © 2013 American Chemical Society Terms of Use (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) |
spellingShingle | Stadlmayr, Werner Huber, Veronika Penner, Simon Klötzer, Bernhard Memmel, Norbert Alloying and Structure of Ultrathin Gallium Films on the (111) and (110) Surfaces of Palladium |
title | Alloying and Structure of Ultrathin Gallium Films
on the (111) and (110) Surfaces of Palladium |
title_full | Alloying and Structure of Ultrathin Gallium Films
on the (111) and (110) Surfaces of Palladium |
title_fullStr | Alloying and Structure of Ultrathin Gallium Films
on the (111) and (110) Surfaces of Palladium |
title_full_unstemmed | Alloying and Structure of Ultrathin Gallium Films
on the (111) and (110) Surfaces of Palladium |
title_short | Alloying and Structure of Ultrathin Gallium Films
on the (111) and (110) Surfaces of Palladium |
title_sort | alloying and structure of ultrathin gallium films
on the (111) and (110) surfaces of palladium |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3786520/ https://www.ncbi.nlm.nih.gov/pubmed/24089625 http://dx.doi.org/10.1021/jp407337q |
work_keys_str_mv | AT stadlmayrwerner alloyingandstructureofultrathingalliumfilmsonthe111and110surfacesofpalladium AT huberveronika alloyingandstructureofultrathingalliumfilmsonthe111and110surfacesofpalladium AT pennersimon alloyingandstructureofultrathingalliumfilmsonthe111and110surfacesofpalladium AT klotzerbernhard alloyingandstructureofultrathingalliumfilmsonthe111and110surfacesofpalladium AT memmelnorbert alloyingandstructureofultrathingalliumfilmsonthe111and110surfacesofpalladium |