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Magnetoelectric (ME) laminate composites have emerged as promising candidates for the development of highly sensitive magnetic field sensors at resonance frequency in recent years. Unfortunately, ME coefficient decreases dramatically and the noise level increases at low frequencies far from resonance, which leads to a significant reduction in sensitivity. For the purpose of removing these drawbacks,...
Magnetoelectric (ME) composites consisting of piezoelectric materials and magnetostrictive materials have been studied extensively due to their large ME effects than those in single phases [1-2], offering promise for magnetic moment sensing and other applications. In these composites, the ME coefcient is dependent upon the elastic coupling that occurs at the interface between piezoelectric and magnetostrictive...
Magnetoelectric (ME) response has attracted continuously increasing interest in the past decades due to its potential applications in many new multifunctional devices, including magnetic storage, magnetic sensors, current sensors, and energy harvesters.[1] In general, single-phase ME materials are difficult to be utilized in such devices because the ME responses are weak and mostly appear at low temperature...
Over the last decade, multiferroic laminate heterostructures, consisting of the piezoelectric layer (such as PZT) and the magnetostrictive layer (such as Terfenol-D), have attracted considerable attention due to their high Curie or Neel temperature and large magnetoelectric (ME) effect at room temperature. The ME laminate materials have demonstrated potential in many applications such as transducers,...
Since the piezoelectric/magnetostrictive laminate composite exhibits a strong magnetoelectric (ME) effect, it provides a novel method for detecting ac magnetic field. There are a number of researches on the development of ME composites and their applications in detecting magnetic fields. Dong et al. demonstrates the possibility of fabricating ac magnetic field sensors with high performances[1]. Especially,...
In recent years, electric field-modulated ferromagnetism, called converse magnetoelectric (CME) effect, has attracted great interest due to their many potential device applications such as coil-less magnetoelectric flux switching [1], high-density data storages [2] and tunable inductors [3]. It has been reported that the maximum CME effects in most multiferroics composites are usually achieved under...
This paper reports on an electromagnetically actuated MEMS cantilever device that is triggered using an oscillating signal which sends the device into resonance. At resonance, a moving magnetic cantilever is driven to large amplitudes, allowing it to be driven far enough to latch against a magnetic pad. Since the device is driven at resonance, it can be combined with other devices that have different...
The field directional dependence of magnetoelectric (ME) behaviors in rectangular-shaped Terfenol-D and Pb(Zr,Ti)O3 laminated composites are investigated. In experiments, the DC bias field is applied along either the length or width direction of the composites respectively superimposed with a parallel or vertical AC magnetic filed. It demonstrates that: 1) the ME voltage coefficients (at 1 kHz) while...
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