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Article Dans Une Revue Applied Physics Letters Année : 2013

Influence of crystal mosaicity on axial channeling effects and lattice site determination of impurities

Résumé

Using the electron emission channeling and Rutherford backscattering/channeling techniques, the influence of the mosaicity of a thin film on the axial channeling of charged particles was investigated. It is found that crystal mosaicity leads to a broadening and a degradation of the experimental channeling effects. This phenomenon, which is shown to be of major importance when assessing the lattice site of impurities in a single crystal, can be modeled quantitatively by using the mosaic tilt and twist components derived from X-ray rocking curve scans. As a case study, we illustrate that our approach allows to accurately determine the lattice site of Er in AlN, despite the significant influence of mosaicity on the channeling measurements.
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Dates et versions

hal-00914581 , version 1 (04-06-2021)

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B. de Vries, U. Wahl, Sandra Ruffenach, Olivier Briot, A. Vantomme. Influence of crystal mosaicity on axial channeling effects and lattice site determination of impurities. Applied Physics Letters, 2013, 103 (17), pp.172108. ⟨10.1063/1.4826705⟩. ⟨hal-00914581⟩
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