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@INPROCEEDINGS{Guasco:1035314,
author = {Guasco, Laura and Pütter, Sabine and Saerbeck, Thomas and
Keller, Thomas and Khaydukov, Yury},
title = {{R}equirements for hydrogen absorption experiments with
{RNR} in {P}d/{C}o/{P}d},
reportid = {FZJ-2025-00372},
year = {2024},
abstract = {Pt/Co/Pt and Pd/Co/Pd heterostructures with perpendicular
magnetic anisotropy (PMA) are traditionally used for
magnetic recording. PMA can be tuned by e.g. thin film
thickness, strain, ion bombardment or temperature. Recently,
it has been shown that the absorption of hydrogen in the
heavy metal modifies the interfacial spin- orbit coupling
and hence reduces the PMA.[1-3] As a result, reversible and
non-destructive toggling of the easy axis of magnetization
between in-plane and out-of-plane orientation at room
temperature was demonstrated in a Co/GdOx all-solid-state
device for magnetic hydrogen sensing.[4]Resonance enhanced
polarized neutron reflectometry (RNR) is an effective tool
for studying the hydrogen uptake quantitatively and with
time resolution of less than seconds and the hydrogen impact
on the magnetic properties in PMA systems.[5]In this
contribution we report on results of RNR experiments on
hydrogen uptake in Pt/Co/Pt trilayers sand- wiched by 25 nm
Nb layers on MgO(001) substrates fabricated by molecular
beam epitaxy measured at D17 at ILL and the requirements to
measure the switching of the easy axis on hydrogen uptake in
the trilayer systems Pt/Co/Pt and Pd/Co/Pd.[1] S. M.
Valvidares, et al., Phys. Rev. B 81, 024415 (2010)[2] K.
Munbodh, et al., Phys. Rev. B 83 094432 (2011)[3] G. Causer
et al., ACS Appl. Mater. Interfaces 38 35420 (2019) [4] J.
Tan et al. Nature Materials 18 35 (2019)[5] L. Guasco et
al., Nature Comm. 13 1486 (2022)},
month = {Dec},
date = {2024-12-05},
organization = {MLZ User Meeting, München (Fed Rep
Germany), 5 Dec 2024 - 6 Dec 2024},
subtyp = {After Call},
cin = {JCNS-4 / JCNS-FRM-II / MLZ},
cid = {I:(DE-Juel1)JCNS-4-20201012 /
I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
experiment = {EXP:(DE-MLZ)MBE-MLZ-20151210},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1035314},
}