TY - JOUR
T1 - The effect of hydrogen gas on Pd/[Co/Pd]30/Pd multilayer thin films
AU - Schefer, Thomas A.
AU - Cortie, David L.
AU - Kostylev, Mikhail
PY - 2022/6/1
Y1 - 2022/6/1
N2 - It is known that large perpendicular magnetic anisotropy is found at interfaces of cobalt (Co) with palladium (Pd). We investigated Pd/[Co/Pd]30/Pd multilayer thin films with very thin Co and Pd layers with ferromagnetic resonance (FMR) spectroscopy in air and in hydrogen gas. A number of samples characterised by different Pd thicknesses were studied. A ferromagnetic resonance (FMR) peak shift similar to Co/Pd bilayer thin films was observed in the presence of hydrogen gas in the sample environment for all samples. The FMR peak shift is larger for samples with thicker Pd layers. Additionally, we found a dependence of the linewidth on the Pd layer thickness and explain this with the presence of spin pumping.
AB - It is known that large perpendicular magnetic anisotropy is found at interfaces of cobalt (Co) with palladium (Pd). We investigated Pd/[Co/Pd]30/Pd multilayer thin films with very thin Co and Pd layers with ferromagnetic resonance (FMR) spectroscopy in air and in hydrogen gas. A number of samples characterised by different Pd thicknesses were studied. A ferromagnetic resonance (FMR) peak shift similar to Co/Pd bilayer thin films was observed in the presence of hydrogen gas in the sample environment for all samples. The FMR peak shift is larger for samples with thicker Pd layers. Additionally, we found a dependence of the linewidth on the Pd layer thickness and explain this with the presence of spin pumping.
KW - Ferromagnetic resonance
KW - Hydrogen gas sensing
KW - Palladium
KW - Perpendicular magnetic anisotropy
UR - http://www.scopus.com/inward/record.url?scp=85124899912&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2022.169184
DO - 10.1016/j.jmmm.2022.169184
M3 - Article
AN - SCOPUS:85124899912
SN - 0304-8853
VL - 551
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
M1 - 169184
ER -