Superconducting Nb-film LC resonator

Leif Grönberg, Ilkka Suni, A. Finne, R. Blaauwgeers, V. Eltsov, G. Eska, J. Ruohio, R. Schanen, M. Krusius

    Research output: Contribution to journalArticleScientificpeer-review

    1 Citation (Scopus)

    Abstract

    Sputtered Nb thin-film LC resonators for low frequencies at 0.5 MHz have been fabricated and tested in the temperature range 0.05–1 K in magnetic fields up to 30 mT. Their Q value increases towards decreasing temperature as Q∝T−0.5 and reaches ∼103 at 0.05 K. As a function of magnetic field Q is unstable and displays variations up to 50%, which are reproducible from one field sweep to the next. These instabilities are attributed to dielectric losses in the plasma deposited SiO2 insulation layer, since the thin-film coil alone reaches a Q≳105 at 0.05 K.
    Original languageEnglish
    Pages (from-to)3682-3686
    Number of pages5
    JournalReview of Scientific Instruments
    Volume72
    Issue number9
    DOIs
    Publication statusPublished - 2001
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Superconducting films
    superconducting films
    Resonators
    resonators
    Magnetic fields
    Thin films
    Plasma stability
    Dielectric losses
    thin films
    dielectric loss
    magnetic fields
    insulation
    Insulation
    coils
    Display devices
    low frequencies
    Plasmas
    Temperature
    temperature

    Cite this

    Grönberg, L., Suni, I., Finne, A., Blaauwgeers, R., Eltsov, V., Eska, G., ... Krusius, M. (2001). Superconducting Nb-film LC resonator. Review of Scientific Instruments, 72(9), 3682-3686. https://doi.org/10.1063/1.1394179
    Grönberg, Leif ; Suni, Ilkka ; Finne, A. ; Blaauwgeers, R. ; Eltsov, V. ; Eska, G. ; Ruohio, J. ; Schanen, R. ; Krusius, M. / Superconducting Nb-film LC resonator. In: Review of Scientific Instruments. 2001 ; Vol. 72, No. 9. pp. 3682-3686.
    @article{3fe25d32d63744c29609bc164231543f,
    title = "Superconducting Nb-film LC resonator",
    abstract = "Sputtered Nb thin-film LC resonators for low frequencies at 0.5 MHz have been fabricated and tested in the temperature range 0.05–1 K in magnetic fields up to 30 mT. Their Q value increases towards decreasing temperature as Q∝T−0.5 and reaches ∼103 at 0.05 K. As a function of magnetic field Q is unstable and displays variations up to 50{\%}, which are reproducible from one field sweep to the next. These instabilities are attributed to dielectric losses in the plasma deposited SiO2 insulation layer, since the thin-film coil alone reaches a Q≳105 at 0.05 K.",
    author = "Leif Gr{\"o}nberg and Ilkka Suni and A. Finne and R. Blaauwgeers and V. Eltsov and G. Eska and J. Ruohio and R. Schanen and M. Krusius",
    note = "Project code: SQUID 2000",
    year = "2001",
    doi = "10.1063/1.1394179",
    language = "English",
    volume = "72",
    pages = "3682--3686",
    journal = "Review of Scientific Instruments",
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    }

    Grönberg, L, Suni, I, Finne, A, Blaauwgeers, R, Eltsov, V, Eska, G, Ruohio, J, Schanen, R & Krusius, M 2001, 'Superconducting Nb-film LC resonator', Review of Scientific Instruments, vol. 72, no. 9, pp. 3682-3686. https://doi.org/10.1063/1.1394179

    Superconducting Nb-film LC resonator. / Grönberg, Leif; Suni, Ilkka; Finne, A.; Blaauwgeers, R.; Eltsov, V.; Eska, G.; Ruohio, J.; Schanen, R.; Krusius, M.

    In: Review of Scientific Instruments, Vol. 72, No. 9, 2001, p. 3682-3686.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Superconducting Nb-film LC resonator

    AU - Grönberg, Leif

    AU - Suni, Ilkka

    AU - Finne, A.

    AU - Blaauwgeers, R.

    AU - Eltsov, V.

    AU - Eska, G.

    AU - Ruohio, J.

    AU - Schanen, R.

    AU - Krusius, M.

    N1 - Project code: SQUID 2000

    PY - 2001

    Y1 - 2001

    N2 - Sputtered Nb thin-film LC resonators for low frequencies at 0.5 MHz have been fabricated and tested in the temperature range 0.05–1 K in magnetic fields up to 30 mT. Their Q value increases towards decreasing temperature as Q∝T−0.5 and reaches ∼103 at 0.05 K. As a function of magnetic field Q is unstable and displays variations up to 50%, which are reproducible from one field sweep to the next. These instabilities are attributed to dielectric losses in the plasma deposited SiO2 insulation layer, since the thin-film coil alone reaches a Q≳105 at 0.05 K.

    AB - Sputtered Nb thin-film LC resonators for low frequencies at 0.5 MHz have been fabricated and tested in the temperature range 0.05–1 K in magnetic fields up to 30 mT. Their Q value increases towards decreasing temperature as Q∝T−0.5 and reaches ∼103 at 0.05 K. As a function of magnetic field Q is unstable and displays variations up to 50%, which are reproducible from one field sweep to the next. These instabilities are attributed to dielectric losses in the plasma deposited SiO2 insulation layer, since the thin-film coil alone reaches a Q≳105 at 0.05 K.

    U2 - 10.1063/1.1394179

    DO - 10.1063/1.1394179

    M3 - Article

    VL - 72

    SP - 3682

    EP - 3686

    JO - Review of Scientific Instruments

    JF - Review of Scientific Instruments

    SN - 0034-6748

    IS - 9

    ER -

    Grönberg L, Suni I, Finne A, Blaauwgeers R, Eltsov V, Eska G et al. Superconducting Nb-film LC resonator. Review of Scientific Instruments. 2001;72(9):3682-3686. https://doi.org/10.1063/1.1394179