Adjustable sensitivity for hydrogen gas sensing using perpendicular-to-plane ferromagnetic resonance in Pd/Co Bi-layer films

Chris Lueng, Peter J. Metaxas, Manu Sushruth, Mikhail Kostylev

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    12 Citations (Scopus)

    Abstract

    In this work we measure hydrogen gas concentration using ferromagnetic resonance in a Pd/Co bi-layer film. The gas detection method is based on a previously demonstrated ferromagnetic resonance (FMR) peak shift which occurs in the presence of hydrogen. We find however that the maximum range of hydrogen concentrations which can normally be measured using this approach is smaller than the whole potential concentration range (i.e. 0%–100%); with the width of the accessible range being dictated by the width of the ferromagnetic resonance line. However, we demonstrate that this challenge can be addressed by exploiting the fact that the FMR peak position depends on the magnetic field applied to the sample. We show that by properly adjusting the magnetic field, overlapping sub-ranges covering a very wide range of hydrogen gas concentrations, from 0.2% to 100%, can been accessed. We speculate that a real-world broad-range device will be composed from 3 to 4 sensors, each of them tuned to a particular sub-range of concentrations and that shape-anisotropy bias can be used instead of applying external magnetic fields to the sensors.

    Original languageEnglish
    Pages (from-to)3407-3414
    Number of pages8
    JournalInternational Journal of Hydrogen Energy
    Volume42
    Issue number5
    DOIs
    Publication statusPublished - 2 Feb 2017

    Fingerprint

    Ferromagnetic resonance
    ferromagnetic resonance
    Hydrogen
    sensitivity
    hydrogen
    Magnetic fields
    Gases
    gases
    magnetic fields
    Sensors
    sensors
    Anisotropy
    resonance lines
    coverings
    adjusting
    anisotropy
    shift

    Cite this

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    title = "Adjustable sensitivity for hydrogen gas sensing using perpendicular-to-plane ferromagnetic resonance in Pd/Co Bi-layer films",
    abstract = "In this work we measure hydrogen gas concentration using ferromagnetic resonance in a Pd/Co bi-layer film. The gas detection method is based on a previously demonstrated ferromagnetic resonance (FMR) peak shift which occurs in the presence of hydrogen. We find however that the maximum range of hydrogen concentrations which can normally be measured using this approach is smaller than the whole potential concentration range (i.e. 0{\%}–100{\%}); with the width of the accessible range being dictated by the width of the ferromagnetic resonance line. However, we demonstrate that this challenge can be addressed by exploiting the fact that the FMR peak position depends on the magnetic field applied to the sample. We show that by properly adjusting the magnetic field, overlapping sub-ranges covering a very wide range of hydrogen gas concentrations, from 0.2{\%} to 100{\%}, can been accessed. We speculate that a real-world broad-range device will be composed from 3 to 4 sensors, each of them tuned to a particular sub-range of concentrations and that shape-anisotropy bias can be used instead of applying external magnetic fields to the sensors.",
    keywords = "Cobalt, Ferromagnetic resonance (FMR), Hydrogen gas sensor, Palladium, Perpendicular magnetic anisotropy",
    author = "Chris Lueng and Metaxas, {Peter J.} and Manu Sushruth and Mikhail Kostylev",
    year = "2017",
    month = "2",
    day = "2",
    doi = "10.1016/j.ijhydene.2016.09.204",
    language = "English",
    volume = "42",
    pages = "3407--3414",
    journal = "International Journal of Hydrogen Energy",
    issn = "0360-3199",
    publisher = "Elsevier",
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    TY - JOUR

    T1 - Adjustable sensitivity for hydrogen gas sensing using perpendicular-to-plane ferromagnetic resonance in Pd/Co Bi-layer films

    AU - Lueng, Chris

    AU - Metaxas, Peter J.

    AU - Sushruth, Manu

    AU - Kostylev, Mikhail

    PY - 2017/2/2

    Y1 - 2017/2/2

    N2 - In this work we measure hydrogen gas concentration using ferromagnetic resonance in a Pd/Co bi-layer film. The gas detection method is based on a previously demonstrated ferromagnetic resonance (FMR) peak shift which occurs in the presence of hydrogen. We find however that the maximum range of hydrogen concentrations which can normally be measured using this approach is smaller than the whole potential concentration range (i.e. 0%–100%); with the width of the accessible range being dictated by the width of the ferromagnetic resonance line. However, we demonstrate that this challenge can be addressed by exploiting the fact that the FMR peak position depends on the magnetic field applied to the sample. We show that by properly adjusting the magnetic field, overlapping sub-ranges covering a very wide range of hydrogen gas concentrations, from 0.2% to 100%, can been accessed. We speculate that a real-world broad-range device will be composed from 3 to 4 sensors, each of them tuned to a particular sub-range of concentrations and that shape-anisotropy bias can be used instead of applying external magnetic fields to the sensors.

    AB - In this work we measure hydrogen gas concentration using ferromagnetic resonance in a Pd/Co bi-layer film. The gas detection method is based on a previously demonstrated ferromagnetic resonance (FMR) peak shift which occurs in the presence of hydrogen. We find however that the maximum range of hydrogen concentrations which can normally be measured using this approach is smaller than the whole potential concentration range (i.e. 0%–100%); with the width of the accessible range being dictated by the width of the ferromagnetic resonance line. However, we demonstrate that this challenge can be addressed by exploiting the fact that the FMR peak position depends on the magnetic field applied to the sample. We show that by properly adjusting the magnetic field, overlapping sub-ranges covering a very wide range of hydrogen gas concentrations, from 0.2% to 100%, can been accessed. We speculate that a real-world broad-range device will be composed from 3 to 4 sensors, each of them tuned to a particular sub-range of concentrations and that shape-anisotropy bias can be used instead of applying external magnetic fields to the sensors.

    KW - Cobalt

    KW - Ferromagnetic resonance (FMR)

    KW - Hydrogen gas sensor

    KW - Palladium

    KW - Perpendicular magnetic anisotropy

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    U2 - 10.1016/j.ijhydene.2016.09.204

    DO - 10.1016/j.ijhydene.2016.09.204

    M3 - Article

    VL - 42

    SP - 3407

    EP - 3414

    JO - International Journal of Hydrogen Energy

    JF - International Journal of Hydrogen Energy

    SN - 0360-3199

    IS - 5

    ER -