Kuo Shu-Hua, Chen Yi-Cheng, Wang Yu-Chieh, Hsieh Wan-Zhen, Chiang Ching-Yu, Cheng Cheng-Maw, Chen Lu-Hsing, Chen Kuo-Ping, Tu Yu-Hao, Lin Jiunn-Yuan, Chu Ying-Hao
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan.
Institute of Physics, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
ACS Omega. 2024 Sep 10;9(38):39856-39862. doi: 10.1021/acsomega.4c05303. eCollection 2024 Sep 24.
In this study, we utilized a stress-sensitive superconductor MgB in combination with a flexible muscovite, a layered silicate, to demonstrate that materials in a reduced-dimension environment could be influenced by external strain. MgB nanocrystals were inserted into the muscovite interlayers using gas phase intercalation, creating a two-dimensional cavity-like structure. Several experiments confirmed that the cavity-induced static pressure from the intercalation effect and the external dynamic bending effect can affect the physical properties of MgB. The results of analyzing the changes in superconducting critical temperature ( ) indicate that the dynamic bending effect corresponds to an applied pressure of approximately 1.2 GPa. This method demonstrates that muscovite intercalation serves as a versatile platform for evaluating the stress effects on functional materials in reduced dimensions under ambient conditions.
在本研究中，我们将一种对应力敏感的超导体MgB与一种柔性云母（一种层状硅酸盐）相结合，以证明处于低维环境中的材料会受到外部应变的影响。利用气相插层法将MgB纳米晶体插入云母层间，形成二维腔状结构。多项实验证实，插层效应引起的腔诱导静压和外部动态弯曲效应会影响MgB的物理性质。对超导临界温度（ ）变化的分析结果表明，动态弯曲效应相当于施加了约1.2 GPa的压力。该方法表明，云母插层可作为一个通用平台，用于在环境条件下评估低维功能材料的应力效应。
