Hydrogen absorption in metal thin films and heterostructures investigated in situ with neutron and X-Ray scattering

S.J. Callori, C. Rehm, G.L. Causer, Mikhail Kostylev, F. Klose

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    © 2016 by the authors; licensee MDPI, Basel, Switzerland.Due to hydrogen possessing a relatively large neutron scattering length, hydrogen absorption and desorption behaviors in metal thin films can straightforwardly be investigated by neutron reflectometry. However, to further elucidate the chemical structure of the hydrogen absorbing materials, complementary techniques such as high resolution X-ray reflectometry and diffraction remain important too. Examples of work on such systems include Nb-and Pd-based multilayers, where Nb and Pd both have strong affinity to hydrogen. W/Nb and Fe/Nb multilayers were measured in situ with unpolarized and polarized neutron reflectometry under hydrogen gas charging conditions. The gas-pressure/hydrogen-concentration dependence, the hydrogen-induced macroscopic film swelling as well as the increase in crystal lattice plane distances of the films were determined. Ferromagnetic-Co/Pd multilayers were studied with polarized neutron reflectometry and in situ ferromagnetic resonance measurements to understand the effect of hydrogen absorption on the magnetic properties of the system. This electronic effect enables a novel approach for hydrogen sensing using a magnetic readout scheme.
    Original languageEnglish
    Article number125
    Number of pages20
    JournalMetals
    Volume6
    Issue number6
    DOIs
    Publication statusPublished - 2016

    Fingerprint

    X ray scattering
    Heterojunctions
    Hydrogen
    Neutrons
    Metals
    Thin films
    Multilayers
    Gases
    Ferromagnetic resonance
    Neutron scattering
    Crystal lattices
    Swelling
    Desorption
    Magnetic properties
    Diffraction
    X rays

    Cite this

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    title = "Hydrogen absorption in metal thin films and heterostructures investigated in situ with neutron and X-Ray scattering",
    abstract = "{\circledC} 2016 by the authors; licensee MDPI, Basel, Switzerland.Due to hydrogen possessing a relatively large neutron scattering length, hydrogen absorption and desorption behaviors in metal thin films can straightforwardly be investigated by neutron reflectometry. However, to further elucidate the chemical structure of the hydrogen absorbing materials, complementary techniques such as high resolution X-ray reflectometry and diffraction remain important too. Examples of work on such systems include Nb-and Pd-based multilayers, where Nb and Pd both have strong affinity to hydrogen. W/Nb and Fe/Nb multilayers were measured in situ with unpolarized and polarized neutron reflectometry under hydrogen gas charging conditions. The gas-pressure/hydrogen-concentration dependence, the hydrogen-induced macroscopic film swelling as well as the increase in crystal lattice plane distances of the films were determined. Ferromagnetic-Co/Pd multilayers were studied with polarized neutron reflectometry and in situ ferromagnetic resonance measurements to understand the effect of hydrogen absorption on the magnetic properties of the system. This electronic effect enables a novel approach for hydrogen sensing using a magnetic readout scheme.",
    author = "S.J. Callori and C. Rehm and G.L. Causer and Mikhail Kostylev and F. Klose",
    year = "2016",
    doi = "10.3390/met6060125",
    language = "English",
    volume = "6",
    journal = "Metals",
    issn = "2075-4701",
    publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
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    Hydrogen absorption in metal thin films and heterostructures investigated in situ with neutron and X-Ray scattering. / Callori, S.J.; Rehm, C.; Causer, G.L.; Kostylev, Mikhail; Klose, F.

    In: Metals, Vol. 6, No. 6, 125, 2016.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Hydrogen absorption in metal thin films and heterostructures investigated in situ with neutron and X-Ray scattering

    AU - Callori, S.J.

    AU - Rehm, C.

    AU - Causer, G.L.

    AU - Kostylev, Mikhail

    AU - Klose, F.

    PY - 2016

    Y1 - 2016

    N2 - © 2016 by the authors; licensee MDPI, Basel, Switzerland.Due to hydrogen possessing a relatively large neutron scattering length, hydrogen absorption and desorption behaviors in metal thin films can straightforwardly be investigated by neutron reflectometry. However, to further elucidate the chemical structure of the hydrogen absorbing materials, complementary techniques such as high resolution X-ray reflectometry and diffraction remain important too. Examples of work on such systems include Nb-and Pd-based multilayers, where Nb and Pd both have strong affinity to hydrogen. W/Nb and Fe/Nb multilayers were measured in situ with unpolarized and polarized neutron reflectometry under hydrogen gas charging conditions. The gas-pressure/hydrogen-concentration dependence, the hydrogen-induced macroscopic film swelling as well as the increase in crystal lattice plane distances of the films were determined. Ferromagnetic-Co/Pd multilayers were studied with polarized neutron reflectometry and in situ ferromagnetic resonance measurements to understand the effect of hydrogen absorption on the magnetic properties of the system. This electronic effect enables a novel approach for hydrogen sensing using a magnetic readout scheme.

    AB - © 2016 by the authors; licensee MDPI, Basel, Switzerland.Due to hydrogen possessing a relatively large neutron scattering length, hydrogen absorption and desorption behaviors in metal thin films can straightforwardly be investigated by neutron reflectometry. However, to further elucidate the chemical structure of the hydrogen absorbing materials, complementary techniques such as high resolution X-ray reflectometry and diffraction remain important too. Examples of work on such systems include Nb-and Pd-based multilayers, where Nb and Pd both have strong affinity to hydrogen. W/Nb and Fe/Nb multilayers were measured in situ with unpolarized and polarized neutron reflectometry under hydrogen gas charging conditions. The gas-pressure/hydrogen-concentration dependence, the hydrogen-induced macroscopic film swelling as well as the increase in crystal lattice plane distances of the films were determined. Ferromagnetic-Co/Pd multilayers were studied with polarized neutron reflectometry and in situ ferromagnetic resonance measurements to understand the effect of hydrogen absorption on the magnetic properties of the system. This electronic effect enables a novel approach for hydrogen sensing using a magnetic readout scheme.

    U2 - 10.3390/met6060125

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    VL - 6

    JO - Metals

    JF - Metals

    SN - 2075-4701

    IS - 6

    M1 - 125

    ER -