Enhanced Electromechanical Response and Thermal Stability of 0.93(Na _1/2 Bi _1/2 )TiO ₃ ‐0.07BaTiO ₃ Through Aerosol Deposition of Base Metal Electrodes

Na1/2Bi1/2TiO3-based relaxor ferroelectrics are extensively investigated for use in transduction applications because of their relatively large electromechanical properties. Integration these materials into devices, however, requires better temperature stability addition to This work demonstrates a novel approach enhance the long-range ferroelectric order as well properties non-ergodic 0.93(Na1/2Bi1/2)TiO3-0.07BaTiO3 (NBT-7BT) without changing chemical composition through, example, substitutions or second phase particles. The involves room deposition copper electrodes directly on ceramic substrate using aerosol (AD) method. collision solid-state particles with surface during AD results impact and residual stresses, inherent process, which shown piezo-response force microscopy induce domain ordering NBT-7BT. Using Raman spectroscopy, magnitude depth profile stress-induced transformation determined. It is demonstrated that deposition-induced stresses significantly increase properties, where observed up 150 °C, approximately 41 °C higher than NBT-7BT samples processed electrode. Moreover, treatment also facilitates switching at lower electric field, enabling maximum polarization field an enhancement piezoelectric response. stress responsible such enhancement. Importantly, this impact-stress-driven tailoring can potentially be utilized other functional well, internal result enhanced