Trivalent Dopant Size Influences Electrostrictive Strain in Ceria Solid Solutions.

ABSTRACT: The technologically important frequency range for the application of electrostrictors and piezoelectrics is tens of Hz to tens of kHz. Sm³⁺- and Gd³⁺-doped ceria ceramics, excellent intermediate-temperature ion conductors, have been shown to exhibit very large electrostriction below 1 Hz. Why this is so is still not understood. While optimal design of ceria-based devices requires an in-depth understanding of their mechanical and electromechanical properties, systematic investigation of the influence of dopant size on frequency response is lacking. In this report, the mechanical and electromechanical properties of dense ceria ceramics doped with trivalent lanthanides (RE_0.1Ce_0.9O_1.95, RE = Lu, Yb, Er, Gd, Sm, and Nd) were investigated.

SUBMITTER: Varenik M 

PROVIDER: S-EPMC8288944 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature