TY  - JOUR
AU  - Guasco, L.
AU  - Khaydukov, Yu. N.
AU  - Pütter, S.
AU  - Silvi, L.
AU  - Paulin, M. A.
AU  - Keller, T.
AU  - Keimer, B.
TI  - Resonant neutron reflectometry for hydrogen detection
JO  - Nature Communications
VL  - 13
IS  - 1
SN  - 2041-1723
CY  - [London]
PB  - Nature Publishing Group UK
M1  - FZJ-2022-02176
SP  - 1486
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - 35304444
UR  - <Go to ISI:>//WOS:000770716000011
DO  - DOI:10.1038/s41467-022-29092-z
UR  - https://juser.fz-juelich.de/record/907713
ER  -