Title of Paper:Ferroelectric aging effects and large recoverable electrostrain in ceria-doped BaTiO3 ceramics

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Affiliation of Author(s):航空学院

Journal:J Am Ceram Soc

Abstract:Ferroelectric aging is a phenomenon that is generally observed in acceptor-doped ferroelectrics and usually produces a large recoverable electrostrain. In this work, using an oxide ionic conducting material, a Gd-modified ceria solution (GDC), as a dopant, we find that GDC-doped BaTiO3 ceramics exhibit ferroelectric aging behaviors at room temperature. These ceramics show double polarization hysteresis (P-E) loops and sprout-shaped recoverable strain vs electric field (S-E) curves. GDC-doped BT ceramic (3 mol%) produces a large recoverable electrostrain of 0.12% at 3 kV/cm. The large ions of Ce3+ and Gd3+, which have small electronegativity, lead to the high mobility of oxygen vacancies and a rapid symmetry conformation for short range ordering (SC-SRO) of points defects, which appear as fast aging effects and a large electrostrain in GDC-doped BT ceramics at room temperature. © 2018 The American Ceramic Society

ISSN No.:0002-7820

Translation or Not:no

Date of Publication:2019-05-01

Co-author:Wang, Fangfang,Dawei Wu,Ren, Xiaobing,Kongjun Zhu

Correspondence Author:Kang Yan