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Influence of uniaxial compressive stress on the ferroelectric behaviors of piezoelectric stack actuators
Gang Yang,Huanlin Gou,Ye Ji,Zhenxing Yue * #,Longtu Li
Tsinghua University
*Correspondence author
#Submitted by
Subject:
Funding: 973,国家自然科学基金,教育部博士点基金,国家自然科学基金（No.2002CB613307，20040003003，50621201 and 50775166）
Opened online:29 March 2008
Accepted by: none
Citation: Gang Yang,Huanlin Gou,Ye Ji.Influence of uniaxial compressive stress on the ferroelectric behaviors of piezoelectric stack actuators [OL]. [29 March 2008] http://en.paper.edu.cn/en_releasepaper/content/19875
 
 
The influences of the uniaxial compressive stress on the dynamic hysteresis of the PZT piezoelectric stack actuator were investigated through the Landau-Khalatnikov simulation and experiments. The results showed that the hysteresis area (A), remnant polarization (Pr) and coercive field (Ec) decreased with increasing the external compressive stress, which could be interpreted in terms of ion displacement, domain switching and movement of 90o domain wall under the under combined electric field and uniaxial compressive stress. Furthermore, as for the change trends of the hysteresis loops (E-P loops) with increasing stress, the simulated results are found to be in good agreement with the measured results.
Keywords:Piezoelectric stack actuator; Stress; Hysteresis; Landau-Khalatnikov theory
 
 
 

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