Journal Article

FZJ-2026-05098

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hydrogen diffusion through a membrane studied with resonant neutron reflectometry

Guasco, L. (Corresponding author) ; Saerbeck, T. ; Keller, T. ; Keimer, B. ; Pütter, S. (Corresponding author)FZJ*

2026
Elsevier New York, NY [u.a.]

Please use a persistent id in citations: doi:10.1016/j.ijhydene.2026.157753  doi:10.34734/FZJ-2026-05098

Abstract: Resonant neutron reflectometry is a powerful probe of hydrogen absorption in thin layers, offering high depthsensitivity and low measurement time. In the case of a hydrogen barrier layer which hinders diffusion theconcentration gradient modifies the resonance conditions in the reflectometric measurement. This can beused to quantify layer-by-layer hydrogen concentrations, while maintaining short measurement times (i. e.5 s) and fast kinetics capabilities. In this study, we illustrate the sequential hydrogen filling of two Nb layersseparated by a ∼ 7 nm Pt/Co/Pt barrier. The broadening and subsequent sharpening of the resonance peakobserved during this process carries information about the hydrogen content of the two absorbing layers.The effective diffusion coefficient through the thin barrier was found to be in the order of 1e−19 m2 s−1. The results demonstrate the potential of resonant neutron reflectometry for accurate ch

Keyword(s): Magnetic Materials (1st) ; Condensed Matter Physics (2nd)

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Contributing Institute(s):

1. JCNS-4 (JCNS-4)
2. Heinz Maier-Leibnitz Zentrum (MLZ)
3. JCNS-FRM-II (JCNS-FRM-II)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
2. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)

Experiment(s):

1. MBE-MLZ: Molecular Beam Epitaxy at MLZ

Appears in the scientific report 2026

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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