Unconventional polarization fatigue in van der Waals layered ferroelectric ionic conductor CuInP₂S₆.

ABSTRACT: Recent progress in two-dimensional ferroelectrics greatly expands the versatility and tunability in van der Waals heterostructure based electronics. However, the switching endurance issue that widely plagues conventional ferroelectrics in practical applications is hitherto unexplored for van der Waals layered ferroelectrics. Herein, we report the observation of unusual polarization fatigue behaviors in van der Waals layered CuInP₂S₆, which also possesses finite ionic conductivity at room temperature. The strong intertwinement of the short-range polarization switching and long-range ionic movement in conjunction with the van der Waals layered structure gives rise to unique morphological and polarization evolutions under repetitive electric cycles. With the help of conc

SUBMITTER: Zhou Z 

PROVIDER: S-EPMC10716391 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature