材料科学
陶瓷
微观结构
晶界
极化(电化学)
铁电陶瓷
纹理(宇宙学)
夹紧
复合材料
电介质
冶金
铁电性
光电子学
机械工程
图像(数学)
工程类
物理化学
人工智能
化学
计算机科学
作者
Yongke Yan,Yuan Zhou,Shashaank Gupta,Shashank Priya
摘要
Grain orientation, BaTiO3 heterogeneous template content, and electrode materials are expected to play an important role in controlling the polarization fatigue behavior of ⟨001⟩ textured Pb(Mg1/3Nb2/3)O3-PbTiO3 ceramics. A comparative analysis with randomly oriented ceramics showed that ⟨001⟩ grain orientation/texture exhibits improved fatigue characteristics due to the reduced switching activation energy and high domain mobility. The hypothesis was validated from the systematic characterization of polarization—electric field behavior and domain wall density. The defect accumulation at the grain boundary and clamping effect arising from the presence of BaTiO3 heterogeneous template in the final microstructure was found to be the main cause for polarization degradation in textured ceramic.
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