Magnetic force driven magnetoelectric effect in Mn-Zn-ferrite/PZT composites

摘要

Several magnetoelectric devices with different structures were prepared using Mn-Zn-ferrite/PZT composite. Its magnetoelectric effect, which arose from piezoelectric effects driven by magnetic force between ferromagnets, has been studied. Experiments showed that the magnetoelectric effects in these devices are much stronger than that observed from the samples relied on magnetostrictive effect. Additionally, the magnetoelectric effect obtained from the devices based on bending piezoelectric effect at resonant point is about one order of magnitude larger than that resulted from ones that rely on stretch mode. Furthermore, magnetoelectric voltage coefficient as high as 7Vcm~(-1)Oe~(-1) with zero bias magnetic field was observed in the device with cantilever structure, which was also based on bending piezoelectric effect.