High current sensitivity and large magnetoelectric effect in magnetostrictive-piezoelectric concentric ring

Chung Ming Leung; Siu Wing Or; S. L. Ho

doi:10.1063/1.4867227

High current sensitivity and large magnetoelectric effect in magnetostrictive-piezoelectric concentric ring

Chung Ming Leung
, Siu Wing Or
, S. L. Ho

The Hong Kong Polytechnic University

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

11 Citations (Scopus)

Abstract

A magnetostrictive-piezoelectric concentric ring (MPCR) is fabricated, and its current sensitivity and magnetoelectric effect are studied theoretically and experimentally. The MPCR has an inner Tb_0.3Dy_0.7Fe _1.92/NdFeB/epoxy magnetostrictive composite ring with a circumferential magnetization and an internal magnetic biasing bonded concentrically to an outer Pb(Zr, Ti)O₃ piezoelectric ceramic ring with a wall-thickness polarization. The current sensing in the MPCR is based on the direct coupling of vortex magnetic fields generated by current-carrying cables with the magnetoelectric effect in the MPCR structure. The MPCR shows high and linear current sensitivities and magnetoelectric voltage coefficients of 15-17 mV/A and 22-26 mV/Oe in the nonresonance frequency range of 1 Hz-50 kHz, and of 185 mV/A and 277 mV/Oe at the fundamental shape resonance of 96 kHz, for current and vortex magnetic field levels of up to 10 A and 6.7 Oe, respectively.

Original language	English
Article number	17A933
Journal	Journal of Applied Physics
Volume	115
Issue number	17
DOIs	https://doi.org/10.1063/1.4867227
Publication status	Published - 7 May 2014

ASJC Scopus subject areas

General Physics and Astronomy

More information

10.1063/1.4867227

http://hdl.handle.net/10397/12325

Cite this

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title = "High current sensitivity and large magnetoelectric effect in magnetostrictive-piezoelectric concentric ring",

abstract = "A magnetostrictive-piezoelectric concentric ring (MPCR) is fabricated, and its current sensitivity and magnetoelectric effect are studied theoretically and experimentally. The MPCR has an inner Tb0.3Dy0.7Fe 1.92/NdFeB/epoxy magnetostrictive composite ring with a circumferential magnetization and an internal magnetic biasing bonded concentrically to an outer Pb(Zr, Ti)O3 piezoelectric ceramic ring with a wall-thickness polarization. The current sensing in the MPCR is based on the direct coupling of vortex magnetic fields generated by current-carrying cables with the magnetoelectric effect in the MPCR structure. The MPCR shows high and linear current sensitivities and magnetoelectric voltage coefficients of 15-17 mV/A and 22-26 mV/Oe in the nonresonance frequency range of 1 Hz-50 kHz, and of 185 mV/A and 277 mV/Oe at the fundamental shape resonance of 96 kHz, for current and vortex magnetic field levels of up to 10 A and 6.7 Oe, respectively.",

author = "\{Ming Leung\}, Chung and \{Wing Or\}, Siu and Ho, \{S. L.\}",

year = "2014",

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T1 - High current sensitivity and large magnetoelectric effect in magnetostrictive-piezoelectric concentric ring

AU - Ming Leung, Chung

AU - Wing Or, Siu

AU - Ho, S. L.

PY - 2014/5/7

Y1 - 2014/5/7

N2 - A magnetostrictive-piezoelectric concentric ring (MPCR) is fabricated, and its current sensitivity and magnetoelectric effect are studied theoretically and experimentally. The MPCR has an inner Tb0.3Dy0.7Fe 1.92/NdFeB/epoxy magnetostrictive composite ring with a circumferential magnetization and an internal magnetic biasing bonded concentrically to an outer Pb(Zr, Ti)O3 piezoelectric ceramic ring with a wall-thickness polarization. The current sensing in the MPCR is based on the direct coupling of vortex magnetic fields generated by current-carrying cables with the magnetoelectric effect in the MPCR structure. The MPCR shows high and linear current sensitivities and magnetoelectric voltage coefficients of 15-17 mV/A and 22-26 mV/Oe in the nonresonance frequency range of 1 Hz-50 kHz, and of 185 mV/A and 277 mV/Oe at the fundamental shape resonance of 96 kHz, for current and vortex magnetic field levels of up to 10 A and 6.7 Oe, respectively.

AB - A magnetostrictive-piezoelectric concentric ring (MPCR) is fabricated, and its current sensitivity and magnetoelectric effect are studied theoretically and experimentally. The MPCR has an inner Tb0.3Dy0.7Fe 1.92/NdFeB/epoxy magnetostrictive composite ring with a circumferential magnetization and an internal magnetic biasing bonded concentrically to an outer Pb(Zr, Ti)O3 piezoelectric ceramic ring with a wall-thickness polarization. The current sensing in the MPCR is based on the direct coupling of vortex magnetic fields generated by current-carrying cables with the magnetoelectric effect in the MPCR structure. The MPCR shows high and linear current sensitivities and magnetoelectric voltage coefficients of 15-17 mV/A and 22-26 mV/Oe in the nonresonance frequency range of 1 Hz-50 kHz, and of 185 mV/A and 277 mV/Oe at the fundamental shape resonance of 96 kHz, for current and vortex magnetic field levels of up to 10 A and 6.7 Oe, respectively.

UR - https://www.scopus.com/pages/publications/84903883682

U2 - 10.1063/1.4867227

DO - 10.1063/1.4867227

M3 - Journal article

SN - 0021-8979

VL - 115

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 17

M1 - 17A933

ER -

High current sensitivity and large magnetoelectric effect in magnetostrictive-piezoelectric concentric ring

Abstract

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