High-frequency current sensor based on lead-free multiferroic BiFeO 3 -BaTiO 3 -based ceramics

Shi, Dongliang; Zhang, Qi; Ye, Yuan Mao; Luo, Lingling; Cheng, Ka Wai Eric; Lin, Dunmin; Lam, Kwok Ho

doi:10.1016/j.measurement.2017.03.036

Cited by 13 publications

(6 citation statements)

References 23 publications

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“…In particular, the 3-2 type polymer-based ME films exhibited proportional ME responses with a linear behavior under an applied H dc of ± 1000 Oe. To determine the sensing capability, the linearity of the ME films was calculated, and the r 2 values were 0.9992 (PVDF/CFO-i-LGO), 0.9978 (PVDF/CFO-i-MGO), and 0.9981 (PVDF/CFO-i-SGO), greater than those reported in the literature [ 43 ]. Therefore, the 3-2 type polymer-based ME films with reliable ME responses have a high feasibility and can be used in ME devices for biomedical-sensing applications.…”

Section: Resultsmentioning

confidence: 93%

Effect of the Two-Dimensional Magnetostrictive Fillers of CoFe2O4-Intercalated Graphene Oxide Sheets in 3-2 Type Poly(vinylidene fluoride)-Based Magnetoelectric Films

Baek

Yang

2021

Polymers

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In the last decade, magnetoelectric (ME) polymer films have been developed by including zero-dimensional or one-dimensional magnetostrictive fillers in a piezoelectric polymer matrix. Existing reports on ME polymer films reveal that the shape of the magnetostrictive fillers is a critical determinant of the polymeric phase conformation, strain transfer between the piezoelectric and magnetostrictive phases, and dipole alignment in the films. In this study, to investigate the effect of two-dimensional (2D) magnetostrictive fillers on piezoelectric, magnetic, and magnetoelectric responses, 3-2 type ME films were prepared using CoFe2O4-intercalated graphene oxide (CFO-i-GO) fillers and poly(vinylidene fluoride) (PVDF) polymers. The 2D fillers of CFO-i-GO were hydrothermally synthesized by CFO intercalation into the interlayers of GO sheets with different lateral sizes, which were controlled by ultrasonication treatment. It was found that the large-lateral-size GO (LGO), medium-lateral-size GO (MGO), and small-lateral-size GO (SGO) fillers in the PVDF-based ME films exhibited a lateral size effect on CFO intercalation, polymeric phase conformation, dipole alignment, and magnetoelectric responses. A maximum ME coefficient (αME) of 3.0 mV/cm∙Oe was achieved with a strong linearity (r2) of 0.9992 at an off-resonance frequency (f) of 1 kHz and applied direct current (dc) magnetic field (Hdc) of ± 1000 Oe. The 3-2 type polymer-based ME films with reliable ME responses have potential for use in high-feasibility ME devices for biomedical sensing applications.

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Section: Resultsmentioning

confidence: 93%

Effect of the Two-Dimensional Magnetostrictive Fillers of CoFe2O4-Intercalated Graphene Oxide Sheets in 3-2 Type Poly(vinylidene fluoride)-Based Magnetoelectric Films

Baek

Yang

2021

Polymers

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“…Among all these devices, ME compositebased current sensors have attracted considerable study interest because of their critical value in current monitoring and measurement. Through the efforts of researchers, the ME composite-based current sensors can be used to measure DC [10,11], power frequency (50 Hz in China) AC [12][13][14][15]. In DC and AC measurements, the ME current sensors are divided into open-loop [12][13][14][15] and closed-loop [16][17][18][19][20][21] structures.…”

Section: Introductionmentioning

confidence: 99%

Cylindrical magnetoelectric FeGa/PZT composite for lightning current sensing applications

Zhou

et al. 2023

Smart Mater. Struct.

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Magnetoelectric (ME) composites have been proved to be applicable to current sensors. However, the previously reported ME materials-based current sensors mainly focus on direct current and sine alternating current sensing, which put a critical limit on the measurement of transient current. In this paper, a cylindrical ME composite consisting of a magnetostrictive Fe83Ga17 (FeGa) cylinder and a piezoelectric Pb(Zr,Ti)O3 (PZT) circular tube is fabricated for lightning current sensing applications. The time-domain output voltage of the FeGa/PZT composite is simulated and measured in detail. Under the excitation of 8/20µs lighting current, the output voltage of the composite can change with the current. But the damping oscillation at its resonant frequency is observed. Furthermore, to obtain an obvious ME response, the FeGa/PZT cylinder and current-carrying wire should be arranged closely and in an orthogonal way. When the amplitude of 8/20µs lightning current is in the range of 500A to 9kA, the ME FeGa/PZT composite shows a sensitivity of 1.36mV/A, a linear response (R2=0.9993), and a small return error (0.12V). These results provide that the ME composite is suitable to be used in non-contact lightning current measurement.

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“…(16) Shi et al proposed a high-frequency current sensor based on lead-free multiferroic BFO ceramic. (17) In this study, crystalline BFO thin films are obtained and their crystallinity and surface morphology are analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Additionally, force response measurement is utilized to evaluate the piezoelectric properties of the thin films.…”

Section: Introductionmentioning

confidence: 99%

Development of Lead-free Force-feedback Tactile Sensor Fabricated from BiFeO3 Piezoelectric Film

Lin¹,

Li²,

Chen³

et al. 2021

Sensors and Materials

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In this study, we develop a flexible lead-free BiFeO 3 (BFO) film sensor that can be applied on complex surfaces of devices. This sensor is fabricated by depositing BFO thin film on a polyimide (PI)-coated copper substrate. The sol-gel (SG) method and spin-coating method are utilized to prepare the BFO piezoelectric film. Two different spin-coating processes under three different sets of parameters and two different annealing temperatures are used in the fabrication. X-ray diffraction (XRD) and scanning electron microscopy are used to examine the crystallinity and surface topography of the BFO thin films, respectively. A lifetime test is performed on the device to validate the robustness of its piezoelectric properties, and a linear scaling relationship between the force and output response is obtained. We propose suitable conditions for preparing the piezoelectric film and demonstrate the reliability of this sensor.

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High-frequency current sensor based on lead-free multiferroic BiFeO 3 -BaTiO 3 -based ceramics

Cited by 13 publications

References 23 publications

Effect of the Two-Dimensional Magnetostrictive Fillers of CoFe2O4-Intercalated Graphene Oxide Sheets in 3-2 Type Poly(vinylidene fluoride)-Based Magnetoelectric Films

Effect of the Two-Dimensional Magnetostrictive Fillers of CoFe2O4-Intercalated Graphene Oxide Sheets in 3-2 Type Poly(vinylidene fluoride)-Based Magnetoelectric Films

Cylindrical magnetoelectric FeGa/PZT composite for lightning current sensing applications

Development of Lead-free Force-feedback Tactile Sensor Fabricated from BiFeO3 Piezoelectric Film

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