In Situ Transmission X-ray Micro-Diffraction from Thin Metal Films Electrodeposited in Microfluidic Channels

T. Wiegmann (1) , J. Drnec (2) , F. Reikowski (1) , J. Stettner (1) , F. Maroun (3) , O. Magnussen (1)

1 CAU - Christian-Albrechts-Universität zu Kiel = Christian-Albrechts University of Kiel = Université Christian-Albrechts de Kiel
2 ESRF - European Synchrotron Radiation Facility [Grenoble]
3 LPMC - Laboratoire de physique de la matière condensée

High-energy X-ray surface diffraction in transmission geometry is combined with a microfluidic thin layer flow cell for in situ studies of the local structure of electrodeposited epitaxial films. The capabilities of this approach are illustrated using Bi films on Au(100) single crystals as an example. We demonstrate that the local film thickness, the strain, and the orientation of the deposits' crystallites can be mapped with a spatial resolution of a few micrometers. The high heterogeneity of the Bi films provides deposits with a wide range of structural properties, allowing to establish correlations between the different parameters as a function of the local thickness.

Domaines: Matériaux; Catalyse; Cristallographie

T. Wiegmann, J. Drnec, F. Reikowski, J. Stettner, F. Maroun, et al.. In Situ Transmission X-ray Micro-Diffraction from Thin Metal Films Electrodeposited in Microfluidic Channels. Journal of The Electrochemical Society, 2020, 167 (11), pp.112505. ⟨10.1149/1945-7111/aba077⟩. ⟨hal-03080001⟩