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Article Dans Une Revue Materialia Année : 2022

Determination of the interdiffusion coefficient at low temperature in Ni/NiCr nanometer-scale multilayers using X-ray reflectivity

Résumé

The interdiffusion coefficient in the Ni/Cr system was determined at low temperature using Ni/Ni 0.78 Cr 0.22 nanometer-scale multilayers with periods of 3.65 and 4.50 nm. X-ray reflectivity measurements were carried out to monitor the 1st Bragg peak intensity with annealing time, at both 400 and 450 °C temperatures. The obtained kinetics of the composition modulation decay allowed determining the interdiffusion coefficients of the uniform final solid solution, Ni 0.89 Cr 0.11 . Values in the order of 10 − 21 to 10 -20 cm 2 .s − 1 at 400 °C and 450 °C, respectively, were found, in line with extrapolations from data of Cr diffusion obtained at higher temperature.
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Dates et versions

hal-04258085 , version 1 (25-10-2023)

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Aurélien Debelle, Anny Michel, Marie Loyer-Prost, Thomas Rieger, Alain Billard, et al.. Determination of the interdiffusion coefficient at low temperature in Ni/NiCr nanometer-scale multilayers using X-ray reflectivity. Materialia, 2022, 25, pp.101528 (8). ⟨10.1016/j.mtla.2022.101528⟩. ⟨hal-04258085⟩
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