The fabrication and properties of a novel double layered surface-mount magnetoelectric（ME） device are investigated and reported. This ME device is made up of two opposite polarized piezoelectric PZT slices bonded on...The fabrication and properties of a novel double layered surface-mount magnetoelectric（ME） device are investigated and reported. This ME device is made up of two opposite polarized piezoelectric PZT slices bonded on the same side of a magnetostrictive material Metglas, forming a novel two PZT in-series device. ME voltage obtained from the two PZT in-series is obviously higher than that of single PZT in a magnetic field with certain value. The ME voltage coefficient（αV） of the surface-mount ME device is significantly enhanced by adjusting the thickness of Metglas： 1） At a frequency of 1 k Hz, αV of this device increases with the layer number of Metglas increased, and the maximum value of αV is about 4.25 times than the minimum; 2） At a frequency of 5 k Hz, the maximum value of αV is 458 mV /Oe, which derives from the ME device with three layers Metglas. This novel design provides an effective way to manufacture miniature and high sensitive ME devices, which makes it possible to apply ME device into integrated circuit（IC）.展开更多
Detailed mathematical modelling approaches that are used to describe the dynamic behaviour of magnetoelectric coupling in magnetostrictive-piezoelectric multiferroics at low-frequencies, in electromechanical resonance...Detailed mathematical modelling approaches that are used to describe the dynamic behaviour of magnetoelectric coupling in magnetostrictive-piezoelectric multiferroics at low-frequencies, in electromechanical resonance region and at microwave range are discussed. The ME （magnetoelectric） voltage coefficients were estimated from the known material parameters. The feasibility for creating new class of functional devices based on magnetoelectric interactions is addressed.展开更多
The development of advanced magnetoelectric(ME)composites necessitates high-performance materials that arecapable of achieving high levels of ME coupling,minimal magnetic loss,and absence or limited reliance on extern...The development of advanced magnetoelectric(ME)composites necessitates high-performance materials that arecapable of achieving high levels of ME coupling,minimal magnetic loss,and absence or limited reliance on externalexcitation sources.In this paper,a(2-2)connectivity ME laminate integrates multiple layers of FeSiB alloy(Metglas)andPb(Mg,Nb)O_(3)-PbTiO_(3)(PMN-PT)single crystal,achieving a remarkable ME coupling coefficient of 2033.4 V/Oe·cm(sevenfold rise)by laser thermal annealing treatment.Here,the laser-induced nanostructures on Metglas,with anoxidized insulation layer and soft and hard magnetic dipole layer improve the Magneto-electric-mechanical couplingwith a mechanical quality factor(Q_(m))exceeding 350.More importantly,the interaction between amorphous andnanocrystalline dipoles triggers an Exchange Bias(EB)effect,leading to a self-biasing performance of 67.45 V/Oe·cm.Furthermore,the composite exhibits an excellent passive DC magnetic detection limit of 22 nT,and an improved weakAC magnetic detection limit down to 383 fT.These explorations offer the potential to enhance passive currentmeasurement,and underwater communication,extend weak magnetic positioning and brain magnetic detection.展开更多
Magnetoelectric(ME)composites have recently attracted an ever-increasing interest and provoked a great number of research activities,driven by the potential applications in novel multifunctional devices,such as sensor...Magnetoelectric(ME)composites have recently attracted an ever-increasing interest and provoked a great number of research activities,driven by the potential applications in novel multifunctional devices,such as sensors and transducers[1].Direct ME effect,which describe the appearance of an electric polarization P upon applying a magnetic field H,is usually evaluated by the展开更多
基金Supported by the National Natural Science Foundation of China(51372174,51132001,11364018 and J1210061)the Natural Science Foundation of Hubei Province(2014CFB610)the Excellent Young Innovation Team Project of Hubei Province(T201429)
文摘The fabrication and properties of a novel double layered surface-mount magnetoelectric（ME） device are investigated and reported. This ME device is made up of two opposite polarized piezoelectric PZT slices bonded on the same side of a magnetostrictive material Metglas, forming a novel two PZT in-series device. ME voltage obtained from the two PZT in-series is obviously higher than that of single PZT in a magnetic field with certain value. The ME voltage coefficient（αV） of the surface-mount ME device is significantly enhanced by adjusting the thickness of Metglas： 1） At a frequency of 1 k Hz, αV of this device increases with the layer number of Metglas increased, and the maximum value of αV is about 4.25 times than the minimum; 2） At a frequency of 5 k Hz, the maximum value of αV is 458 mV /Oe, which derives from the ME device with three layers Metglas. This novel design provides an effective way to manufacture miniature and high sensitive ME devices, which makes it possible to apply ME device into integrated circuit（IC）.
文摘Detailed mathematical modelling approaches that are used to describe the dynamic behaviour of magnetoelectric coupling in magnetostrictive-piezoelectric multiferroics at low-frequencies, in electromechanical resonance region and at microwave range are discussed. The ME （magnetoelectric） voltage coefficients were estimated from the known material parameters. The feasibility for creating new class of functional devices based on magnetoelectric interactions is addressed.
基金supported by the National Key Research and Development Program(Grant No.2021YFB3201800)the Natural Science Foundation of China(Grants 62131017,U22A2019)the Key R&D Project of Shaanxi Province-University Joint Project(2023GXLH-020).
文摘The development of advanced magnetoelectric(ME)composites necessitates high-performance materials that arecapable of achieving high levels of ME coupling,minimal magnetic loss,and absence or limited reliance on externalexcitation sources.In this paper,a(2-2)connectivity ME laminate integrates multiple layers of FeSiB alloy(Metglas)andPb(Mg,Nb)O_(3)-PbTiO_(3)(PMN-PT)single crystal,achieving a remarkable ME coupling coefficient of 2033.4 V/Oe·cm(sevenfold rise)by laser thermal annealing treatment.Here,the laser-induced nanostructures on Metglas,with anoxidized insulation layer and soft and hard magnetic dipole layer improve the Magneto-electric-mechanical couplingwith a mechanical quality factor(Q_(m))exceeding 350.More importantly,the interaction between amorphous andnanocrystalline dipoles triggers an Exchange Bias(EB)effect,leading to a self-biasing performance of 67.45 V/Oe·cm.Furthermore,the composite exhibits an excellent passive DC magnetic detection limit of 22 nT,and an improved weakAC magnetic detection limit down to 383 fT.These explorations offer the potential to enhance passive currentmeasurement,and underwater communication,extend weak magnetic positioning and brain magnetic detection.
基金supported by the National Natural Science Foundation of China (51402164)
文摘Magnetoelectric(ME)composites have recently attracted an ever-increasing interest and provoked a great number of research activities,driven by the potential applications in novel multifunctional devices,such as sensors and transducers[1].Direct ME effect,which describe the appearance of an electric polarization P upon applying a magnetic field H,is usually evaluated by the
