Piezoelectricity and Thermophysical Properties of Ba_0.90Ca_0.10Ti_0.96Zr_0.04O₃ Ceramics Modified with Amphoteric Nd³⁺ and Y³⁺ Dopants.

ABSTRACT: Lead-free barium calcium titanate zirconate (BCTZ) ceramics doped with a single rare-earth element generally exhibit excellent piezoelectric properties. However, their electrical properties deteriorate at an excessive dopant content, limiting their application. In this study, amphoteric neodymium (Nd³⁺) and yttrium (Y³⁺)-codoped BCTZ-NYx ceramics were synthesized via a solid-state reaction at 1240 °C. The influences of the Y³⁺ content (x) on the structural features, electrical properties, mechanical properties, and thermophysical properties were investigated. At a small x (<0.18 mol%), Y³⁺ could enhance the fracture strength and electrical properties by eliminating oxygen vacancies, defect dipoles, and/or structural defects.

SUBMITTER: Tian Y 

PROVIDER: S-EPMC10052513 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature