A FT‐IRAS study of the vibrational properties of CO adsorbed on Cu/Ru (001). II. the dispersion of copper
Yazarlar (2)
Jan Paul
| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | The Journal of chemical physics | ||
| Makale Dili | – | Basım Tarihi | 08-1987 |
| Cilt / Sayı / Sayfa | 87 / 3 / 1857–1865 | DOI | – |
| Makale Linki | https://pubs.aip.org/aip/jcp/article-abstract/87/3/1857/219701 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
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| Özet |
| The dispersion of copper adsorbed on a Ru(001) substrate has been investigated by using Fourier transform‐infrared reflection absorption spectroscopy (FT‐IRAS) and carbon monoxide as a molecular probe. Copper films evaporated at 85 K show a drastically different CO adsorption behavior compared to annealed films and exhibit a variety of adsorption sites. Characteristic C–O stretching frequencies allow us to identify small copper clusters of 1–4 atoms (2138–2123 cm−1), two‐dimensional (2120–2110 cm−1) and three‐dimensional (2098 cm−1) copper aggregates. After annealing to 250 K copper films at sub‐ and monolayer coverages form well‐ordered small two‐ and three‐dimensional copper aggregates. Formation of the epitaxial monolayer or islands of copper (2082 cm−1) requires a surprizingly mild annealing temperature of 350 K. Further annealing to 540 K results in increasing domain size of the … |
| Anahtar Kelimeler |
