%0 Journal Article
%A Guasco, L.
%A Khaydukov, Yu. N.
%A Pütter, S.
%A Silvi, L.
%A Paulin, M. A.
%A Keller, T.
%A Keimer, B.
%T Resonant neutron reflectometry for hydrogen detection
%J Nature Communications
%V 13
%N 1
%@ 2041-1723
%C [London]
%I Nature Publishing Group UK
%M FZJ-2022-02176
%P 1486
%D 2022
%X The detection and quantification of hydrogen is becoming increasingly important in research on electronic materials and devices, following the identification of the hydrogen content as a potent control parameter for the electronic properties. However, establishing quantitative correlations between the hydrogen content and the physical properties of solids remains a formidable challenge. Here we report neutron reflectometry experiments on 50 nm thick niobium films during hydrogen loading, and show that the momentum-space position of a prominent waveguide resonance allows tracking of the absolute hydrogen content with an accuracy of about one atomic percent on a timescale of less than a minute. Resonance-enhanced neutron reflectometry thus allows fast, direct, and non-destructive measurements of the hydrogen concentration in thin-film structures, with sensitivity high enough for real-time in-situ studies.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 35304444
%U <Go to ISI:>//WOS:000770716000011
%R 10.1038/s41467-022-29092-z
%U https://juser.fz-juelich.de/record/907713