Details

Autor(en) / Beteiligte

• Staruch, M.
• Yang, M.-T.
• Li, J. F.
• Dolabdjian, C.
• Viehland, D.
• Finkel, P.

Titel

Frequency reconfigurable phase modulated magnetoelectric sensors using ΔE effect

Ist Teil von

• Applied physics letters, 2017-07, Vol.111 (3)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2017

Quelle

American Institute of Physics

Beschreibungen/Notizen

• Magnetoelectric composites have shown promise in low power magnetic field sensing with responsive detection of low frequency fields through the modulation of electromechanical resonance by exploiting a nonlinearity in magnetoelastic properties (ΔE effect). There is also the as-of-yet unrealized potential of tuning this effect to further enhance the shift in resonant frequency of these devices. In the present work, the magnetic field sensitivity was modulated in a bending mode stress reconfigurable sensor through the application of uniaxial tensile stress, reaching up to 8% f 0/mT. The minimum magnetic noise floor was determined by detecting the frequency shift using a phase locked loop circuit and was found to directly correspond to the maximum in magnetic field sensitivity that resulted from the ΔE effect.