Self-Biased Magnetoelectric Sensor Operating in d36Face-Shear Mode

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Abstract

A magnetoelectric (ME) sensor of face-shear type is demonstrated based on the ME composite consisting of (PbMg0.33 Nb0.67O3)1-x-(PbTiO3)x piezoelectric single crystal (abbreviated as PMN-PT) and Metglas amorphous alloy. The face-shear strain is induced in PMN-PT via the magnetostriction of Metglas under a magnetic field, which generates an ME voltage through the d36 piezoelectric coefficient. The proposed sensor reveals a high ME coupling coefficient of 48.8 V/cm Oe at resonant frequency (∼ 107.5 kHz), which is self-biased with the capability to detect ac magnetic fields of 4.58 nT at 1 kHz and 10.43 pT at resonant frequency, respectively. The self-biased face-shear mode ME sensor exhibits great potential for weak magnetic field detection.

Original languageEnglish
Pages (from-to)22366-22372
Number of pages7
JournalIEEE Sensors Journal
Volume23
Issue number19
DOIs
StatePublished - 1 Oct 2023

Keywords

  • d36 piezoelectric coefficient
  • face-shear mode
  • magnetoelectric (ME) sensor

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