| BaTiO3单晶的正方形电畴翻转模型 |
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| 引用本文： | 刘峰,张晖辉,常福清.BaTiO3单晶的正方形电畴翻转模型[J].工程力学,2011(9):223-227,233. |
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| 作者姓名： | 刘峰 张晖辉 常福清 |
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| 作者单位： | 燕山大学建筑工程与力学学院; |
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| 基金项目： | 燕山大学博士基金项目(B382) |
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| 摘 要： | 大量实验已经证实电畴翻转是铁电材料非线性和迟滞性本构行为的根本原因。研究者已经对BaTiO3单晶的微观电畴翻转行为进行了详细的研究，给出了电畴纵向长大和横向扩张的速度公式。依据这些关系，结合电畴翻转是一渐变过程提出了正方形电畴翻转模型，目的是为了从微观上建立电畴翻转体积分数的演化方程。进一步，应用模型对轴向应力和轴向电...
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| 关 键 词： | 单晶 电畴翻转 电畴翻转体积分数 正方形电畴翻转模型 非线性本构 |
A SQUARE DOMAIN SWITCHING MODEL FOR BaTiO_3 SINGLE CRYSTAL |
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| LIU Feng,ZHANG Hui-hui,CHANG Fu-qing.A SQUARE DOMAIN SWITCHING MODEL FOR BaTiO_3 SINGLE CRYSTAL[J].Engineering Mechanics,2011(9):223-227,233. |
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| Authors: | LIU Feng ZHANG Hui-hui CHANG Fu-qing |
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| Affiliation: | LIU Feng,ZHANG Hui-hui,CHANG Fu-qing(School of Civil Engineering and Mechanics,Yanshan University,Qinhuangdao 066004,China) |
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| Abstract: | It is proved by lots of experiments that,domain switching is the main reason for the nonlinear and hysteresis constitutive behaviors of ferroelectric ceramics.And a large number of studies have been conducted on the microscopic domain switching behaviors of BaTiO3 single crystals.Through direct stroboscopic observation,the forward and sideway motion of 180o domain wall is measured,and the formula of velocity is given.In order to derive the evolution equation of the volume fraction of domain switching,a squa... |
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| Keywords: | single crystal domain switching the volume fraction of domain switching square domain switching model nonlinear constitutive |
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