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In Operando Study of the Hydrogen-Induced Switching of Magnetic Anisotropy at the Co/Pd Interface for Magnetic Hydrogen Gas Sensing

Journal Article


Abstract


  • Heterostructures exhibiting perpendicular magnetic anisotropy (PMA) have traditionally served the magnetic recording industry. However, an opportunity exists to expand the applications of PMA heterostructures into the realm of hydrogen sensing using ferromagnetic resonance (FMR) by exploiting the hydrogen-induced modifications to PMA that occur at the interface between Pd and a ferromagnet. Here, we present the first in operando depth-resolved study of the in-plane interfacial magnetization of a Co/Pd film which features tailorable PMA in the presence of hydrogen gas. We combine polarized neutron reflectometry with in situ FMR to explore how the absorption of hydrogen at the Co/Pd interface affects the heterostructures spin-resonance condition during hydrogen cycling. Experimental data and modeling reveal that the Pd layer expands when exposed to hydrogen gas, while the in-plane magnetic moment of the Co/Pd film increases as the interfacial PMA is reduced to affect the FMR frequency. This work highlights a potential route for magnetic hydrogen gas sensing.

Authors


  •   Causer, Grace (external author)
  •   Kostylev, Mikhail (external author)
  •   Cortie, David L.
  •   Lueng, Chris (external author)
  •   Callori, S J. (external author)
  •   Wang, Xiaolin
  •   Klose, Frank (external author)

Publication Date


  • 2019

Citation


  • Causer, G. L., Kostylev, M., Cortie, D. L., Lueng, C., Callori, S. J., Wang, X. L. & Klose, F. (2019). In Operando Study of the Hydrogen-Induced Switching of Magnetic Anisotropy at the Co/Pd Interface for Magnetic Hydrogen Gas Sensing. ACS Applied Materials and Interfaces, 11 35420-35428.

Scopus Eid


  • 2-s2.0-85072686911

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3832

Number Of Pages


  • 8

Start Page


  • 35420

End Page


  • 35428

Volume


  • 11

Place Of Publication


  • United States

Abstract


  • Heterostructures exhibiting perpendicular magnetic anisotropy (PMA) have traditionally served the magnetic recording industry. However, an opportunity exists to expand the applications of PMA heterostructures into the realm of hydrogen sensing using ferromagnetic resonance (FMR) by exploiting the hydrogen-induced modifications to PMA that occur at the interface between Pd and a ferromagnet. Here, we present the first in operando depth-resolved study of the in-plane interfacial magnetization of a Co/Pd film which features tailorable PMA in the presence of hydrogen gas. We combine polarized neutron reflectometry with in situ FMR to explore how the absorption of hydrogen at the Co/Pd interface affects the heterostructures spin-resonance condition during hydrogen cycling. Experimental data and modeling reveal that the Pd layer expands when exposed to hydrogen gas, while the in-plane magnetic moment of the Co/Pd film increases as the interfacial PMA is reduced to affect the FMR frequency. This work highlights a potential route for magnetic hydrogen gas sensing.

Authors


  •   Causer, Grace (external author)
  •   Kostylev, Mikhail (external author)
  •   Cortie, David L.
  •   Lueng, Chris (external author)
  •   Callori, S J. (external author)
  •   Wang, Xiaolin
  •   Klose, Frank (external author)

Publication Date


  • 2019

Citation


  • Causer, G. L., Kostylev, M., Cortie, D. L., Lueng, C., Callori, S. J., Wang, X. L. & Klose, F. (2019). In Operando Study of the Hydrogen-Induced Switching of Magnetic Anisotropy at the Co/Pd Interface for Magnetic Hydrogen Gas Sensing. ACS Applied Materials and Interfaces, 11 35420-35428.

Scopus Eid


  • 2-s2.0-85072686911

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3832

Number Of Pages


  • 8

Start Page


  • 35420

End Page


  • 35428

Volume


  • 11

Place Of Publication


  • United States