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Disappearance of Fatigue Heterogeneity Due to an Introduction of La 0.8 Sr 0.2 MnO 3 Buffer Layers in Modified Lead Zirconate Titanate Ceramics
Author(s) -
Zhang Yong,
Wang Xiangrong,
Ma Liang,
Qv Fuyang,
Zhu Jia
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12563
Subject(s) - lead zirconate titanate , materials science , buffer (optical fiber) , perovskite (structure) , ceramic , ferroelectricity , polarization (electrochemistry) , lead (geology) , composite material , mineralogy , chemical engineering , optoelectronics , chemistry , dielectric , telecommunications , geomorphology , computer science , geology , engineering
A disappearance of fatigue heterogeneity has been observed with an introduction of La 0.8 Sr 0.2 MnO 3 ( LSM ) buffer layers in modified lead zirconate titanate ceramics. This disappearance provides clear evidence for the presence of trapped charge defects near the ferroelectric‐electrode interface. The time‐dependent polarization switching curves reveal that the modified lead zirconate titanate ceramics with LSM buffer layers displayed much less retardation after fatigue cycles. These results point to the essential role of oxygen vacancy during fatigue.