Influence of 90° domain switching on the physical properties of tetragonal barium titanate single crystals

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• 作者：YinXiao Du ; M. Lei ; X.L. Chen ; D.F. Zhang
• 关键词：90° ; domain switching ; BaTiO₃ single crystal ; Piezoelectric response ; Dielectric property ; Interconversion of a and c crystallographic axes ; Actuation strain
• 刊名：Physica B
• 出版年：2008
• 出版时间：1 September 2008
• 年：2008
• 卷：403
• 期：18
• 页码：3018-3021
• 全文大小：381 K

文摘

In this paper, we report the influence of 90° domain switching on the physical properties of tetragonal BaTiO₃ single crystals. It is found that the contribution of 90° domain switching to the piezoelectric response is much larger in magnitude than the contribution of the direct piezoelectric effect under large external mechanical stress. Simultaneously, the interconversion of a and c crystallographic axes and the large actuation strain as high as 1 % is induced by 90° domain switching in the tetragonal BaTiO₃ single crystal.