Multiferroic cantilever for power generation using dual functionality

Abstract

Lead zirconate titanate (PZT)/Ni cantilevers have been developed using the pulsed laser deposition technique for harnessing magnetic as well as mechanical energy. High voltage (1.2 mV, 1.8 mV, and 8.5 mV) and power density (1100, 2400, and 3600 mW/m3) were generated across the PZT/Ni cantilevers (in 3–3 mode) having PZT thin films deposited at 100 mTorr, 200 mTorr, and 300 mTorr oxygen pressures, respectively, at their respective resonance frequencies with 0.5 g acceleration. Maximum power response (3600 mW/m3) was observed at a load resistance of 100 kΩ for the cantilever having PZT film deposited at 300 mTorr oxygen pressure, which is manifested to the efficient ferroelectric and ferromagnetic properties of PZT/Ni system. The power generated from the PZT/Ni cantilever was further enhanced to 18 700 mW/m3 by superimposing magnetic energy with mechanical vibrations. These results are extremely promising for the realization of an efficient energy harvester utilizing both magnetic and mechanical energy.

Electrocaloric Effect in PZT Thick Film for the Cooling Device Applications

“…The crystallite size and lattice parameter are determined along the dominant (110) diffraction plane of PZT and are found to be crystallite size = 27 nm and a = 4.05 Å. The obtained values are in accordance with the reported literature [11].…”

“…The crystallographic planes (100), ( 110), ( 111) and (211) at 21.89°, 31.09°, 38.34°and 55.34°corresponding to PZT are observed and are shown in Fig. 2 [11]. The crystallite size and lattice parameter are determined along the dominant (110) diffraction plane of PZT and are found to be crystallite size = 27 nm and a = 4.05 Å.…”

“…Preparation of thick film of PZT is displayed in the flow chart as shown in Fig. Repeating the steps our prelimilinary work [11]. Simultaneously, PZT powder is procured commercially which act as a particle source.…”

Self‐biased magnetoelectric composite for energy harvesting

“…Gupta et al 207 explored the thin-film-based Ni/ PZT cantilever structure for magnetic and mechanical energy harvesting. 207 PZT thin films (~2 μm) were deposited on 100 μm Ni substrates (22 mm × 4 mm) by PLD. The deposited PZT films presented a high degree of orientation (71%) along the <110> direction.…”

“…Patil et al 86 Dual-stimulus ME energy harvesters effectively exploit the energy of magnetic fields and mechanical vibration, but their miniaturization and the improvement of their mechanical coupling coefficients remain challenging. Gupta et al 207 explored the thin-film-based Ni/ PZT cantilever structure for magnetic and mechanical energy harvesting. 207 PZT thin films (~2 μm) were deposited on 100 μm Ni substrates (22 mm × 4 mm) by PLD.…”