Electric Fatigue in Lead Zirconate Titanate Ceramics

Qiyue Jiang; Wenwu Cao; L. Eric Cross

doi:10.1111/j.1151-2916.1994.tb06979.x

Electric Fatigue in Lead Zirconate Titanate Ceramics

Qiyue Jiang, Wenwu Cao, L. Eric Cross

Research output: Contribution to journal › Article › peer-review

166 Scopus citations

Abstract

Electric fatigue is a major obstacle for some potential applications of ferroelectric materials based on reversals of spontaneous polarization, such as memory devices and high strain actuators. Our studies of finegrained hotpressed lead zirconate titanate with lanthanum dopant (PLZT 7/68/32) show that fast fatigue is actually caused by contaminated surfaces instead of intrinsic structure deterioration or the change of domain states. All of the specimens with conventionally cleaned surfaces showed significant fatigue after 10₅ switching cycles, but specimens cleaned with a new cleaning procedure did not fatigue even after more than 10⁸ switching cycles. This type of fatigue is found to be due to generated microcracking at the ceramic–electrode interface.

Original language	English (US)
Pages (from-to)	211-215
Number of pages	5
Journal	Journal of the American Ceramic Society
Volume	77
Issue number	1
DOIs	https://doi.org/10.1111/j.1151-2916.1994.tb06979.x
State	Published - Jan 1994

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.1994.tb06979.x

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abstract = "Electric fatigue is a major obstacle for some potential applications of ferroelectric materials based on reversals of spontaneous polarization, such as memory devices and high strain actuators. Our studies of finegrained hotpressed lead zirconate titanate with lanthanum dopant (PLZT 7/68/32) show that fast fatigue is actually caused by contaminated surfaces instead of intrinsic structure deterioration or the change of domain states. All of the specimens with conventionally cleaned surfaces showed significant fatigue after 105 switching cycles, but specimens cleaned with a new cleaning procedure did not fatigue even after more than 108 switching cycles. This type of fatigue is found to be due to generated microcracking at the ceramic–electrode interface.",

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AB - Electric fatigue is a major obstacle for some potential applications of ferroelectric materials based on reversals of spontaneous polarization, such as memory devices and high strain actuators. Our studies of finegrained hotpressed lead zirconate titanate with lanthanum dopant (PLZT 7/68/32) show that fast fatigue is actually caused by contaminated surfaces instead of intrinsic structure deterioration or the change of domain states. All of the specimens with conventionally cleaned surfaces showed significant fatigue after 105 switching cycles, but specimens cleaned with a new cleaning procedure did not fatigue even after more than 108 switching cycles. This type of fatigue is found to be due to generated microcracking at the ceramic–electrode interface.

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Electric Fatigue in Lead Zirconate Titanate Ceramics

Abstract

All Science Journal Classification (ASJC) codes

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