Self-Assembled Lateral Multilayers from Thin Film Alloys of Immiscible Metals
| Autor: | Gregor Witte, R. F. C. Farrow, E. D. Tober, David D. Chambliss, K. Kalki, Ronald Franklin Marks |
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| Rok vydání: | 1998 |
| Předmět: |
Materials science
Low-energy electron diffraction business.industry Alloy General Physics and Astronomy Order (ring theory) Substrate (electronics) engineering.material law.invention Condensed Matter::Materials Science Crystallography Optics law Condensed Matter::Superconductivity Perpendicular engineering Thin film Scanning tunneling microscope Nuclear Experiment business Stoichiometry |
| Zdroj: | Physical Review Letters. 81:1897-1900 |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | Thin films consisting of alloys of immiscible metals display a unique form of compositional ordering not observed in the bulk. Utilizing scanning tunneling microscopy and low energy electron diffraction, we have examined thin films of ${\mathrm{Co}}_{\ensuremath{\eta}}{\mathrm{Ag}}_{1\ensuremath{-}\ensuremath{\eta}}$ and ${\mathrm{Fe}}_{\ensuremath{\eta}}{\mathrm{Ag}}_{1\ensuremath{-}\ensuremath{\eta}}$ grown on Mo(110) surfaces. Both of these systems are observed to form a compositionally ordered alloy of alternating, contiguous stripes of Co (or Fe) and Ag with the long axis of the stripe coinciding with the Mo[001] direction in the plane of the substrate. The average stripe periodicities are on the order of 2.0 to 2.5 nm along the $\mathrm{Mo}[\overline{1}10]$ (perpendicular to the stripes) direction depending on film stoichiometry. |
| Databáze: | OpenAIRE |
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