Structure determination of very thin epitaxial layers of metastable body centered cubic Co with ion channeling

Dekoster, J; Bemelmans, Hilde; Wächter, J. De; Moons, R; Langouche, Guido

doi:10.1063/1.112077

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…The epitaxial growth relationship between Fe and MgO is known as Fe͑001͒ / / MgO͑001͒ and Fe͗110͘ / / MgO͗100͘. 7 Therefore, each arm of the Fe cross structure was along the Fe͗110͘ direction thus removing any crystal anisotropic effects. The resistivity as a function of temperature for the 10-and 2-nm-thick films and the current parallel and perpendicular to the expected step edges ͑ ʈ and Ќ ͒ are shown in Figs.…”

Section: Resultsmentioning

confidence: 99%

Anisotropic transport behavior in ultrathin epitaxial Fe films on vicinal oxide substrates

Jin

McEvoy

Shvets

2005

Journal of Applied Physics

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Step-induced anisotropy of electron transport in ultrathin Fe film was investigated. The Fe films ͑2 and 10 nm͒ were deposited on vicinal MgO ͑100͒ substrate using molecular-beam epitaxy. It is found that the films with a thickness of 10 and 2 nm are continuous and discontinuous, respectively, which was determined from their resistivity values, the temperature dependency of the resistivity and the V-I curve. The enhanced magnetoresistance in the continuous and the discontinuous films was observed when the current flows parallel and perpendicular to the miscut direction, respectively. We suggest that the atomic steps in the continuous films nucleate additional domain walls acting as scattering centers and the extra scattering was introduced for the current perpendicular to the step edges. The mechanism of the influence of the atomic steps on the electron-transport properties is different in the continuous and discontinuous films. We further suggest that in the discontinuous films, the atomic steps result in the anisotropic growth of the islands and the anisotropy in the transport behavior as a consequence.

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Section: Resultsmentioning

confidence: 99%

Anisotropic transport behavior in ultrathin epitaxial Fe films on vicinal oxide substrates

Jin

McEvoy

Shvets

2005

Journal of Applied Physics

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“…However, once again, the depth and element selectivity of ion beam analysis can often outperform diffraction techniques. As an example, Dekoster et al investigated the lattice structure of a 2 nm-thin Co film sandwiched between two Fe thin films [54]. Whereas bulk Co typically exhibits an fcc or hcp lattice structure, it was anticipated that the two adjacent Fe layers could stabilize Co in a bcc structure.…”

Section: Lattice Structurementioning

confidence: 99%

“…Angular yield profiles for a 2 nm thin Co layer (in an Fe/Co/Co stack) along the h0 01i and h0 01i axis. Reproduced from[54].…”

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50 years of ion channeling in materials science

Vantomme

2016

Nuclear Instruments and Methods in Physics Research Section B:

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In the early days of ion beam analysis, i.e. the early 60s, channeling was discovered and brought to maturity via a combined effort in experimental, computational and theoretical research. It was soon realized that the probability for nuclear interaction (such as nuclear scattering, nuclear reactions, ionization followed by X-ray emission. . .) would significantly decrease when steering the ion beam along a crystallographic direction of a single crystal. Hence, this effect would be optimally suited to investigate a wide range of materials properties related to their crystal structure, such as defects, elastic strain, the lattice site of impurities, as well as phonon-related properties.In this paper, I will briefly review some of the pioneering work, which led to the discovery and theoretical understanding of ion channeling. Subsequently, a number of applications will be discussed where the strength of the ion beam analysis technique allows deducing information which is often hardly (or not) attainable by other techniques. Throughout the paper, I will reflect on the future of channeling in materials research, and pay special attention to potential pitfalls, challenges and opportunities.

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FeCo

Note¹

2022

Magnetic Properties of Metals: Magnetic and Electric Properties of Magnetic Metallic Multilayers

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Structure determination of very thin epitaxial layers of metastable body centered cubic Co with ion channeling

Cited by 8 publications

References 8 publications

Anisotropic transport behavior in ultrathin epitaxial Fe films on vicinal oxide substrates

Anisotropic transport behavior in ultrathin epitaxial Fe films on vicinal oxide substrates

50 years of ion channeling in materials science

FeCo

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