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Article Dans Une Revue Superlattices and Microstructures Année : 2015

Peculiar effective elastic anisotropy of nanometric multilayers studied by surface Brillouin scattering

Résumé

We show in this paper by using a two-scale transition model that the elastic anisotropy of a thin film specimen can be tuned by appropriate stacking design. The anisotropic behaviour is illustrated for two monophase thin films, namely W which is perfectly elastically isotropic and Au which is strongly elastically anisotropic, and for a nanometric W/Au multilayers. The experimental measurements show that the model capture the elastic anisotropy rather well even for a nanometric multilayer stacking (period of 12 nm) and that the elastic anisotropy of W/Au multilayer is more pronounced than the ones of the two components for a fraction of 50%. This enhanced anisotropy is discussed in view of the multilayer microstructure
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Dates et versions

hal-01326100 , version 1 (11-07-2017)

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D Faurie, P Djemia, O Castelnau, R Brenner, Eric Le Bourhis, et al.. Peculiar effective elastic anisotropy of nanometric multilayers studied by surface Brillouin scattering. Superlattices and Microstructures, 2015, 88, pp.551-560. ⟨10.1016/j.spmi.2015.10.015⟩. ⟨hal-01326100⟩
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