Magneto electric sensor based on cantilever coated galfenol/ AlN structure

Haghparast, M.; Tehranchi, M.M.; Hamidi, S. M.

doi:10.1016/j.jmmm.2023.170602

Journal of Magnetism and Magnetic Materials

2023

DOI: 10.1016/j.jmmm.2023.170602

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Magneto electric sensor based on cantilever coated galfenol/ AlN structure

M. Haghparast

M.M. Tehranchi

S. M. Hamidi

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2024

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Cited by 1 publication

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Enhancement of magnetoelectric coupling in laminate composites of textured Fe–Ga thin sheet and PZT

Liu,

He,

et al. 2024

AIP Advances

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Magneto-mechano-electric (MME) generators consisting of piezoelectric and magnetostrictive materials can convert the stray magnetic noise to useful electric energy for the wireless sensor networks utilizing the magnetoelectric coupling effect and magnetic interactions. In this paper, a scalable engineering approach was proposed to fabricate the laminate MME generator composed of a PZT/Fe–Ga/PZT sandwich structure. The Goss-oriented Fe81Ga19 thin sheet with a large magnetostriction of 244 ppm was produced by a simple and low-cost approach, and the commercial polycrystalline piezoelectric ceramic products (PZT-5H) were used as the PZT layers. The effect of grain orientation, device structure, magnetic field amplitude, and resonance frequency on the electrical output of the PZT/Fe–Ga/PZT MME generator was investigated. The electrical output of the MME generator containing the Goss-oriented Fe81Ga19 thin sheet reached an AC voltage of 4.58 V and the ME coefficient of 76.33 V/cm·Oe under a low excitation magnetic field of 26 Oe at a low resonance frequency of 26 Hz. The MME generator with a Goss-oriented Fe–Ga layer shows 4.7 times higher output voltage and ME coupling coefficient than that with the no-oriented polycrystalline Fe–Ga layer, but only 81% of the latter’s resonance frequency. This is related to the significant increase in magnetostriction due to the texture transition after secondary recrystallization annealing at the temperature of 950 °C. This paper provides a very promising solution to meet the self-power supply needs of the Internet of Things utilizing low-value and low-frequency magnetic fields.

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Enhancement of magnetoelectric coupling in laminate composites of textured Fe–Ga thin sheet and PZT

Liu,

He,

et al. 2024

AIP Advances

View full text Add to dashboard Cite

show abstract

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Magneto electric sensor based on cantilever coated galfenol/ AlN structure

Cited by 1 publication

References 63 publications

Enhancement of magnetoelectric coupling in laminate composites of textured Fe–Ga thin sheet and PZT

Enhancement of magnetoelectric coupling in laminate composites of textured Fe–Ga thin sheet and PZT

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