Local magnetism of ultrathin fcc-Co films on Cu(100) investigated by 111In probes
| Autor: | B.-U. Runge, G. Filleböck, M. Dippel, U. Kohl, Günter Schatz, Karin Jacobs |
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| Rok vydání: | 1998 |
| Předmět: |
Materials science
Condensed matter physics Magnetism Diffusion Analytical chemistry chemistry.chemical_element Surfaces and Interfaces Substrate (electronics) Condensed Matter Physics Epitaxy Copper Surfaces Coatings and Films chemistry Materials Chemistry Cobalt Hyperfine structure Two-dimensional nuclear magnetic resonance spectroscopy |
| Zdroj: | Surface Science. 407:104-113 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/s0039-6028(98)00154-x |
| Popis: | Structural aspects and magnetic properties of ultrathin fcc-Co films epitaxially grown on Cu(100) have been investigated. Insight into the local structure and magnetism has been gained through perturbed γγ-angular correlation spectroscopy (PAC) using radioactive 111In probes. In 2-monolayer-thick Co films, a strongly reduced magnetic hyperfine field of Bhf = 5 T compared with the bulk value (Bhf(bulk) = 23.6 T) is observed, which is indicative for an outward shift of the 111In from the substitutional surface site. Diffusion of Cu atoms from the Cu substrate on to the Co film occurs at elevated temperatures and leads to the formation of mixed CoCu environments at the 111In probes. |
| Databáze: | OpenAIRE |
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