Multiaxial response of hard and soft ferroelectrics under stress and electric field
Multiaxial response of hard and soft ferroelectrics under stress and electric field
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DOI：
10.1117/12.474968
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发表时间：
2002-07
期刊：
影响因子：
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通讯作者：
J. Huber;J. Shieh;N. Fleck
中科院分区：
文献类型：
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作者：
J. Huber;J. Shieh;N. Fleck
对软质PZT-5 H、硬质PZT-4D和钡钛酸铅样品在应力和电场空间进行了多轴加载。加载路径为：（1）先用电场极化，再用与极化方向成一定角度的电场复极化。(2)电场和同轴压应力的比例加载，应力和电场的比例在试验之间变化。在情况（1）中，极化材料被切割以产生与原始极化方向成角度的面。测量的材料响应的报告和初始开关表面计算的基础上从电位移的线性响应的偏移。测量用于评估开关的微机械或现象学模型中所需的功能。
Samples of soft PZT-5H, hard PZT-4D and Barium Titanate were subjected to multi-axial loading in stress and electric field space. The loading paths were: (1) Poling with electric field, followed by repolarizing with electric field at an angle to the original poling direction. (2) Proportional loading with electric field and coaxial compressive stress, the proportions of stress and electric field being varied between tests. In case (1) the poled material was cut to produce faces angled to the original poling direction. The measured material responses are reported and initial switching surfaces are calculated based on an offset from linear response in electric displacement. The measurements are used to assess the features required in micromechanical or phenomenological models of switching.