Improved magnetoelectric effect in magnetostrictive/piezoelectric composite with flux concentration effect for sensitive magnetic sensor

PurposeInvestigations over new types of materials as a potential power source for different types of devices were raised dramatically in the last few years. It is connected especially with global needs and that most of the devices in our world need electricity to work. In this paper, an investigation on magnetoelectric effect in the magnetostrictive-piezoelectric composite material is presented.Design/methodology/approachAn author's research setup for investigation of magnetoelectric effect in the developed novel material was prepared. The new composite material was made of magnetostrictive particles of Terfenol-D and lead zirconium titanate (PZT) material.FindingsObtained results show that changes in an electric voltage output from the prepared material are highly dependent on the changes in external magnetic field. It was found out that rate of changes of magnetic field around composite material is one of the most important factors which has influence on the magnetoelectric effect. Taking into account the obtained results, it was proven that prepared hybrid material shows magnetoelectric effect in the case of work in alternating magnetic field.Originality/valueThis phenomenon might be used in a field of energy harvesting as potential power source for devices with low power consumption. Moreover, this new material gives an opportunity to be used as an additional gauge for determination of deformation or crack propagation in the samples during fatigue tests.

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Enhancing the magnetoelectric response of Metglas/polyvinylidene fluoride laminates by exploiting the flux concentration effect

Applied Physics Letters ◽

10.1063/1.3231614 ◽

2009 ◽

Vol 95 (11) ◽

pp. 112903 ◽

Cited By ~ 93

Author(s):

Z. Fang ◽

S. G. Lu ◽

F. Li ◽

S. Datta ◽

Q. M. Zhang ◽

...

Keyword(s):

Polyvinylidene Fluoride ◽

Concentration Effect ◽

Flux Concentration ◽

Magnetoelectric Response

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A New Method to Increase the Magnetoelectric Voltage Coefficients of Metglas/PVDF Laminate Composites

MRS Proceedings ◽

10.1557/proc-1199-f06-08 ◽

2009 ◽

Vol 1199 ◽

Author(s):

Zhao Fang ◽

David Sheng-Guo Lu ◽

Ninad Mokhariwale ◽

Mario Remond El Tahchi ◽

Qiming Zhang

Keyword(s):

Magnetic Field ◽

Aspect Ratio ◽

Magnetic Flux ◽

Polyvinylidene Fluoride ◽

Effective Means ◽

Concentration Effect ◽

Magnetic Flux Density ◽

Laminar Composites ◽

Voltage Coefficient ◽

Flux Concentration

AbstractThe magnetic flux density inside a Metglas sheet is much higher than that of the applied external magnetic field due to its high magnetic permeability, which is known as the magnetic flux concentration effect. Magnetic flux concentration of Metglas as a function of its sheet aspect ratio (width/length) was investigated for Metglas/Polyvinylidene fluoride (PVDF) laminar composites. Both the simulations and experimental results suggest that the magnetic flux concentration effect is markedly enhanced when the aspect ratio of a Metglas sheet is reduced. Consequently the magnetostriction of Metglas and the magnetoelectric (ME) voltage coefficients of the laminar composites are enhanced. The ME voltage coefficient for a laminar composite with a 1 mm wide and 30 mm long Metglas sheet (25 μm thick) is 21.46 V/cm•Oe, which is much higher than those reported earlier in similar laminar composites without making use of the flux concentration effect. The results demonstrate an effective means to significantly enhance the sensitivity of the magnetostrictive/piezoelectric composites as weak magnetic field sensors.

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