Voltage-mode direct-current magnetoelectric sensor based on piezoelectric-magnetostrictive heterostructure

Long Zhang; Siu Wing Or; Chung Ming Leung

doi:10.1063/1.4919047

Voltage-mode direct-current magnetoelectric sensor based on piezoelectric-magnetostrictive heterostructure

Long Zhang, Siu Wing Or, Chung Ming Leung

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

12 Citations (Scopus)

Abstract

A dc magnetoelectric sensor operating in ac voltage driving mode is developed based on a piezoelectric-magnetostrictive heterostructure having four thickness-polarized Pb(Zr, Ti)O₃ piezoelectric plates bonded symmetrically on a length-magnetized Tb_0.3Dy_0.7Fe_1.92 magnetostrictive plate to give an electrically parallel input and an electrically series output. The dc magnetic field sensing in the sensor is evaluated theoretically and experimentally and is found to originate from a unique ac voltage-driven, dc magnetic field-tuned resonance dc magnetoelectric effect in the heterostructure. An interestingly high, linear, and negative ac voltage-controlled dc magnetic field sensitivity of -1.3 mV/Oe/V is obtained in a broad range of dc magnetic field of 0-400 Oe by referencing an ac voltage of ≤5 V peak amplitude and 116 kHz frequency at the input of the heterostructure.

Original language	English
Article number	17A748
Journal	Journal of Applied Physics
Volume	117
Issue number	17
DOIs	https://doi.org/10.1063/1.4919047
Publication status	Published - 7 May 2015

ASJC Scopus subject areas

General Physics and Astronomy

More information

10.1063/1.4919047

http://hdl.handle.net/10397/30066

Cite this

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abstract = "A dc magnetoelectric sensor operating in ac voltage driving mode is developed based on a piezoelectric-magnetostrictive heterostructure having four thickness-polarized Pb(Zr, Ti)O3 piezoelectric plates bonded symmetrically on a length-magnetized Tb0.3Dy0.7Fe1.92 magnetostrictive plate to give an electrically parallel input and an electrically series output. The dc magnetic field sensing in the sensor is evaluated theoretically and experimentally and is found to originate from a unique ac voltage-driven, dc magnetic field-tuned resonance dc magnetoelectric effect in the heterostructure. An interestingly high, linear, and negative ac voltage-controlled dc magnetic field sensitivity of -1.3 mV/Oe/V is obtained in a broad range of dc magnetic field of 0-400 Oe by referencing an ac voltage of ≤5 V peak amplitude and 116 kHz frequency at the input of the heterostructure.",

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Voltage-mode direct-current magnetoelectric sensor based on piezoelectric-magnetostrictive heterostructure

Abstract

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