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在压缩下超连接的无形氧化物网络
Sung Keun Lee1,2, Elias El Ghazaoui3, Jin Jung Kweon3
1Laboratory of Physics and Chemistry of Earth and Planetary Materials, School of Earth and Environmental Sciences, Seoul National University, Seoul, Republic of Korea. sungklee@snu.ac.kr.
Nature communications
|November 14, 2025
概括
无可逆转密集氧化玻璃由于增强的网络纠和超连接性,显示出令人惊的可塑性. 这一发现解释了双重机械反应,并指导了新型超硬玻璃材料的开发.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 地质物理学 地质物理学
背景情况:
- 无可逆转密集的氧化玻璃表现出意想不到的软化和可塑性,与密集后的典型刚性相矛盾.
- 在无形网络中,控制这些独特的机械反应的原子级机制尚不清楚.
- 了解高压下网络纠和连接对于解释这些现象至关重要.
研究的目的:
- 为了研究在极端变形下缩无形氧化物的原子级变化.
- 阐明网络结构,纠和机械特性之间的关系.
- 探索玻璃行为中的配置多样性和超连接性的作用.
主要方法:
- 磁共振光谱学被用来测量密集的无形氧化物.
- 分析的重点是网络纠,超连接和原子的协调.
- 研究了无形氧化 (Al2O3) 和其他复杂氧化玻璃的配置多样性.
主要成果:
- 在密集的无形氧化物中发现了增强网络纠和超连接的证据.
- 高度协调的原子的增加和它们的空间接近表明了超连接性.
- 与其他氧化玻璃相比,无形Al2O3表现出更大的配置多样性,并在较低的压力下达到超连接性.
- 通过增加非网络电话的现场强度来促进配置多样性.
结论:
- 增强的连接性,特别是低压的超连接性,可能会在变形过程中促进网络的灵活性.
- 这项工作提供了一个概念框架,用于控制压力下的眼镜中的双重机械反应.
- 这些发现指导了超硬密集玻璃的开发,并解释了行星内部超连接玻璃的弱化.
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