Electrical de-poling and re-poling of relaxor-PbTiO3 piezoelectric single crystals without heat treatment

• DOI: 10.1038/s41467-024-50847-3
• Publication Date: 2024-07-30T20:03:07Z
• Authors: Hwang-Pill Kim; Mao-Hua Zhang; Bo Wang; Huaiyu Wu; Zhengze Xu; Sipan Liu; Sunho Moon; Yohachi Yamashita; Jong Eun Ryu; Jun Liu; Shujun Zhang; Long-Qing Chen; Xiaoning Jiang
• Keywords: Poling

Re-poling of unexpected partially depoled piezoelectric materials conventionally needs to be first fully through annealing above their Curie temperature revive performances. Here, we investigated de-poling and re-poling Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals under electric fields at room temperature. We found that alternating current with amplitudes near the coercive field low frequencies (<10 Hz) can employed successfully depolarize poled also demonstrated a reversible polarization switching process relaxor-PbTiO3 crystal ultrasound transducer without device performance degradations. This experimental observation is supported by phase-field simulation, showing readily induce temperature, while direct transient state only within an uncontrollable short period time. The findings suggest new strategies for unprecedented in-device tailoring states ferroelectric materials. authors find conventional heat treatment.