Achieving Temperature-Insensitive High Piezoelectricity by Reentrant Relaxor Transition.

ABSTRACT: Although precision sensors and actuators demand piezoelectric materials with temperature-insensitive high piezoelectricity (d₃₃), achieving such a property is physically challenging because high d₃₃ relies on tuning the material to the vicinity of a ferroelectric-ferroelectric transition but it renders the property highly temperature-sensitive. This issue is particularly prominent for lead-free materials. Herein, a lead-free Bi-doped (Ba,Ca)(Zr,Ti)TiO₃ ceramic showing a low-temperature reentrant relaxor transition is designed, which is a diffuse transition from a tetragonal ferroelectric to a reentrant relaxor, the latter characterized by orthorhombic (O) polar nanodomains embedded in the tetragonal (T) ferroelectric matrix. The reentrant relaxor compositio

SUBMITTER: Yang Y 

PROVIDER: S-EPMC12520457 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature