Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Applied physics letters, 2015-07, Vol.107 (3)

Ort / Verlag

United States: American Institute of Physics

Erscheinungsjahr

2015

Quelle

AIP Scitation Journals Complete

Beschreibungen/Notizen

• 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.