AI 中文总结
本研究提出固溶体方法，通过闭环验证流程证实KTa1-xNbxO3（0<x<1）钙钛矿氧化物具备室温块体塑性，拓展了可位错工程改造的钙钛矿氧化物范围。
AI 中文摘要
人们正在对钙钛矿氧化物进行位错工程改造，以获取多种功能特性，但存在一个主要瓶颈：迄今为止，可通过位错工程改造（尤其是室温下块体机械变形实现）的钙钛矿氧化物仅局限于三种材料：SrTiO3（2001年，Brunner等人）、KNbO3（2016年，Mark等人）和KTaO3（2024年，Fang与Zhang等人）。本文提出一种简单有效的固溶体方法，以显著拓展材料范围。我们展示了KTa1-xNbxO3（0<x<1）钙钛矿氧化物，通过构建包含晶体生长、布氏硬度压痕、块体压缩及透射电子显微镜表征的闭环验证流程，证实其具备室温块体塑性。研究发现有望为钙钛矿氧化物的位错调控功能打开材料工具箱。
英文摘要
Dislocations are being engineered into perovskite oxides to harvest versatile functional properties. One major bottleneck, however, persists: perovskite oxides that can be engineered with dislocations, particularly via mechanical deformation at room temperature in bulk scale, have so far been limited to only three materials: SrTiO3 (2001, Brunner et al.), KNbO3 (2016, Mark et al.), and KTaO3 (2024, Fang & Zhang et al.). Here, we propose a simple and effective approach by using solid solution to significantly extend the range of materials. We showcase KTa1-xNbxO3 (0<x<1) perovskite oxides for their bulk plasticity at room temperature by constructing a closed-loop validation workflow that includes crystal growth, Brinell indentation, bulk compression, and transmission electron microscopy characterization. Our findings are expected to unlock the materials toolbox for dislocation-tuned functionality of perovskite oxides.
Comments10 pages, 4 figures
