Effects of magnetic field and pressure in magnetoelastic stress reconfigurable thin film resonators

M. Staruch; C. Kassner; S. Fackler; I. Takeuchi; K. Bussmann; S. E. Lofland; C. Dolabdjian; R. Lacomb; P. Finkel

doi:10.1063/1.4927309

Effects of magnetic field and pressure in magnetoelastic stress reconfigurable thin film resonators

M. Staruch, C. Kassner, S. Fackler, I. Takeuchi, K. Bussmann, S. E. Lofland, C. Dolabdjian, R. Lacomb, P. Finkel

Physics

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12 Scopus citations

Abstract

Free-standing CoFe thin-film doubly clamped stress reconfigurable resonators were investigated as a function of magnetic field and pressure. A large uniaxial anisotropy resulting from residual uniaxial tensile stress, as revealed from magnetic hysteresis loops, leads to an easy magnetization axis aligned along the length of the beams. The quality factor of the driven resonator beams under vacuum is increased by 30 times, leading to an enhanced signal-to-noise ratio and a predicted reduction in the intrinsic magnetic noise by a factor of 6, potentially reaching as low as ∼25 pT/√Hz at 1 Torr. Stress reconfigurable sensors operating under vacuum could thus further improve the limit of detection and advance development of magnetic field sensing technology.

Original language	English (US)
Article number	032909
Journal	Applied Physics Letters
Volume	107
Issue number	3
DOIs	https://doi.org/10.1063/1.4927309
State	Published - Jul 20 2015

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4927309

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title = "Effects of magnetic field and pressure in magnetoelastic stress reconfigurable thin film resonators",

abstract = "Free-standing CoFe thin-film doubly clamped stress reconfigurable resonators were investigated as a function of magnetic field and pressure. A large uniaxial anisotropy resulting from residual uniaxial tensile stress, as revealed from magnetic hysteresis loops, leads to an easy magnetization axis aligned along the length of the beams. The quality factor of the driven resonator beams under vacuum is increased by 30 times, leading to an enhanced signal-to-noise ratio and a predicted reduction in the intrinsic magnetic noise by a factor of 6, potentially reaching as low as ∼25 pT/√Hz at 1 Torr. Stress reconfigurable sensors operating under vacuum could thus further improve the limit of detection and advance development of magnetic field sensing technology.",

author = "M. Staruch and C. Kassner and S. Fackler and I. Takeuchi and K. Bussmann and Lofland, {S. E.} and C. Dolabdjian and R. Lacomb and P. Finkel",

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T1 - Effects of magnetic field and pressure in magnetoelastic stress reconfigurable thin film resonators

AU - Staruch, M.

AU - Kassner, C.

AU - Fackler, S.

AU - Takeuchi, I.

AU - Bussmann, K.

AU - Lofland, S. E.

AU - Dolabdjian, C.

AU - Lacomb, R.

AU - Finkel, P.

PY - 2015/7/20

Y1 - 2015/7/20

N2 - Free-standing CoFe thin-film doubly clamped stress reconfigurable resonators were investigated as a function of magnetic field and pressure. A large uniaxial anisotropy resulting from residual uniaxial tensile stress, as revealed from magnetic hysteresis loops, leads to an easy magnetization axis aligned along the length of the beams. The quality factor of the driven resonator beams under vacuum is increased by 30 times, leading to an enhanced signal-to-noise ratio and a predicted reduction in the intrinsic magnetic noise by a factor of 6, potentially reaching as low as ∼25 pT/√Hz at 1 Torr. Stress reconfigurable sensors operating under vacuum could thus further improve the limit of detection and advance development of magnetic field sensing technology.

AB - Free-standing CoFe thin-film doubly clamped stress reconfigurable resonators were investigated as a function of magnetic field and pressure. A large uniaxial anisotropy resulting from residual uniaxial tensile stress, as revealed from magnetic hysteresis loops, leads to an easy magnetization axis aligned along the length of the beams. The quality factor of the driven resonator beams under vacuum is increased by 30 times, leading to an enhanced signal-to-noise ratio and a predicted reduction in the intrinsic magnetic noise by a factor of 6, potentially reaching as low as ∼25 pT/√Hz at 1 Torr. Stress reconfigurable sensors operating under vacuum could thus further improve the limit of detection and advance development of magnetic field sensing technology.

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Effects of magnetic field and pressure in magnetoelastic stress reconfigurable thin film resonators

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