In-situ Observation of Crack Growth and Domain Switching Around Vickers Indentation on BaTiO3 Single Crystal Under Sustained Electric Field
来源期刊：Acta Metallurgica Sinica2013年第6期
论文作者：Bing JIANG Meicheng LI
文章页码：772 - 776
摘 要：The crack propagation and domain switching process around the indentation on the surface of barium titanate single crystal under the external electric field was investigated by atomic force microscope and polarized light microscope.The evolutions of domain switching and crack propagation were in-situ observed when a 90 a c domain wall moved across the indentation which was driven by external electric field.The results show that the incompatible strain induced by domain switching in the residual stress zone around the indentation is the driving force of the anisotropic crack propagation.The crack propagation results in the changes of the fine domain stripes around the crack tip.
Bing JIANG1，Meicheng LI1
1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,School of Renewable Energy,North China Electric Power University
摘 要：The crack propagation and domain switching process around the indentation on the surface of barium titanate single crystal under the external electric field was investigated by atomic force microscope and polarized light microscope.The evolutions of domain switching and crack propagation were in-situ observed when a 90 a c domain wall moved across the indentation which was driven by external electric field.The results show that the incompatible strain induced by domain switching in the residual stress zone around the indentation is the driving force of the anisotropic crack propagation.The crack propagation results in the changes of the fine domain stripes around the crack tip.
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