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河北工业大学
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Giant actuation strain nearly 0.6% in a periodically orthogonal poled lead titanate zirconate ceramic via reversible domain switching.

Title: Giant actuation strain nearly 0.6% in a periodically orthogonal poled lead titanate zirconate ceramic via reversible domain switching.
Authors: Faxin Li1,2 lifaxin@pku.edu.cn
Qiangzhong Wang1
Hongchen Miao1
Source: Journal of Applied Physics. 8/21/2017, Vol. 122 Issue 7, p1-6. 6p.
Document Type: Article
Subject Terms: FERROELECTRIC ceramic materials
ACTUATORS
LEAD zirconate titanate
AUTOMATIC control
CERAMIC materials
NAICS/Industry Codes: 333995 Fluid Power Cylinder and Actuator Manufacturing
Abstract: The widely used ferroelectric ceramics based actuators always suffer from small output strains (typically ∼0.1%-0.15%). Non-180° domain switching can generate a large strain in ferroelectrics but it is usually irreversible. In this work, we tailored the domain structures in a soft lead titanate zirconate (PZT) ceramic by periodical orthogonal poling. The non-180° switching in this domainengineered PZT ceramics turns to be reversible, resulting in a local giant actuation strain of nearly 0.6% under a field of 2 kV/mm at 0.1 Hz. The large interfacial stresses between regions with different poling directions during electric loading/unloading were thought to be responsible for the reversible non-180° domain switching. The switching strain drops quickly with the increasing frequency, and stabilized at about 0.2% at or above 1.0 Hz. The large actuation strain remains quite stable after 104 cycles of loading, which is very promising for low-frequency, large-strain actuators. [ABSTRACT FROM AUTHOR]
(Copyright applies to all Abstracts.)
Author Affiliations: 1LTCS and College of Engineering, Peking University, Beijing 100871, China ; 2Center for Applied Physics and Technology, Peking University, Beijing 100871, China
ISSN: 0021-8979 (Sherpa/RoMEO, JCR)
PageCount: 1-7
volume: 122
issue: 7
issn: 00218979
pubdate: 2017
DOI: https://doi.org/10.1063/1.4997940