New Piezoelectric Generator (PG) Based on a Lithium Tantalate (LiTaO₃) Monocrystal Fiber

This study presents an experimental investigation of single-crystal lithium tantalate (LiTaO3) fiber grown using the laser-heated pedestal growth (LHPG) technique and its application as a high-efficiency energy converter. Structural analysis was performed by employing Raman spectroscopy and X-ray diffraction, confirming the crystallization of the fiber and the formation of the LTO as a single-phase. Compression and stretching deformations, coupled with the application of 0.5 and 1 V, demonstrated an increase in electrical power with higher deformation. By applying a voltage of 1 V to the LiTaO3 single-crystal fiber under compression and stretching deformations, electrical energy generation was observed in the ranges of 3.44 to 3.46 mW (stretching) and 3.52 to 3.53 mW (compression). These results demonstrate the high efficiency of lithium tantalate (LiTaO3) single-crystal fibers in converting mechanical energy into electrical energy, making them a promising and sustainable alternative to conventional piezoelectric materials that do not contain lead in their structure.