Boosts in Polarization and Piezoelectric Responses of Lead-Free Ferroelectrics through Strain-Enhanced Glassy Coexistent Polars with High Dynamics.

ABSTRACT: The miniaturization of domain size via point-defect modification has emerged as an effective strategy for optimizing piezoelectric properties in lead-free ferroelectrics, such as achieving large piezoelectric constants and slim-hysteresis electrostrain through polymorphic nanodomain design. However, this approach is not consistently reliable due to the uncontrollable deceleration of domain wall motion and polarization rotation (i.e., polar dynamics) caused by the random local fields around doping sites. In this work, an innovative strategy is proposed to enhance the polarization and electrostrain responses of nanodomain-patterned ferroelectrics through the design of a strain-enhanced glassy coexistent polar state (SGP), which can be established by incorporating large-radius cation Hf⁴

SUBMITTER: He L 

PROVIDER: S-EPMC12499439 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature