Unravelling the structural origin of cyclic fatigue in ferroelectrics

揭示铁电体循环疲劳的结构起源

• 批准号: DP190101155
• 负责人: Prof Xiaozhou Liao
• 金额: $ 28.78万
• 依托单位: The University of Sydney
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2019
• 资助国家: 澳大利亚
• 起止时间: 2019-01-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP190101155
• 关键词: Unravelling; structural; origin; cyclic; fatigue

Ferroelectric materials have extensive applications in electromechanical devices and memories and in service are often subjected to repeat mechanical and/or electrical loading, leading to cyclic fatigue and failure. This project aims to apply in-situ electron microscopy techniques and computational modelling to explore cyclic ferroelectric fatigue behaviour and to understand the relationships between local atomic scale structure and fatigue. The structural origin of ferroelectric fatigue has not been clear because of the limitations of previous measurement capabilities. This project will provide guidance in materials design to increase ferroelectric fatigue lifetime for more reliable ferroelectric-based electronic devices.

铁电材料在机电设备和记忆中具有广泛的应用，并且在服务中通常会重复进行机械和/或电气负载，从而导致环状疲劳和失败。该项目旨在应用原位电子显微镜技术和计算建模来探索环状铁电疲劳行为，并了解局部原子量表结构和疲劳之间的关系。由于先前的测量能力的局限性，铁电疲劳的结构起源尚不清楚。该项目将提供材料设计的指导，以增加铁电疲劳寿命，以实现更可靠的基于铁电的电子设备。