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所属单位：航空学院
发表刊物：J Am Ceram Soc
摘要：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号：0002-7820
是否译文：否
发表时间：2019-05-01
合写作者：Wang, Fangfang,吴大伟,Ren, Xiaobing,朱孔军
通讯作者：严康