Abstract
The magnetoelectric (ME) coupling is investigated in laminated composites employing piezoelectric ceramic PZT (PZT-8), iron-nickel-based ferromagnetic alloy with constant elasticity (FeNi-FACE), and soft magnetic amorphous ribbon FeCuNbSiB (Fe73.5Cu1Nb3Si13.5B9). The two different ferromagnetic materials of FeNi-FACE and FeCuNbSiB result in built-in dc magnetic bias (Hdc) due to difference in their magnetic permeability and coercivity. In addition, the relatively high mechanical quality factors (Qm) for FeNi-FACE, PZT-8, and FeCuNbSiB enhance the resonant ME voltage due to an increased effective Qm of ME composite. Hence, a strong resonant ME response at zero-biased dc magnetic field can be obtained. The corresponding ME voltage coefficients (MEVC) at resonance for PZT/FeNi-FACE/FeCuNbSiB (FeFP) composite and FeCuNbSiB/FeNi-FACE/PZT/FeNi-FACE/FeCuNbSiB (FeFPFFe) composites achieve 2.19 V/Oe (27.375 V/cm Oe) and 3.37 V/Oe (42.125 V/cm Oe), respectively, which is ∼102 times higher than that of the previously reported NKNLS-NZF/Ni/NKNLS-NZF trilayer composite.
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