Abstract
A class of the magnetostrictive iron-cobalt/nickel clad plate cantilever is prepared in this study. The relevant ability for harvesting vibration energy is systematically investigated in comparison with the single iron-cobalt cantilever. In addition, the effects of the magnitude of bias magnetic field (i.e., external magnetic field) and the magnetization angle on the energy-harvesting performance are considered. The results indicated that the iron-cobalt/nickel clad plate cantilever exhibits far greater power generation compared with that of the single iron-cobalt cantilever. Besides, the iron-cobalt/nickel clad plate cantilever displayed high sensitivity to the magnitude of bias magnetic field and the magnetization angle. In more detail, the output voltage of the iron-cobalt/nickel clad plate cantilever peaks at a point even while the bias magnetic field constantly increases. A theory of dynamic balance can explain this phenomenon. Meanwhile, the resonance frequency of the iron-cobalt/nickel clad plate cantilever is proportional to the bias magnetic field due to the influence of the elastic modulus variation. This work provides insights into the exploration and design, not only of the vibration-energy-harvesting components but also of the sensitive detectors.
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