Quartz amorphization: a dynamical instability

G. W. Watson; S. C. Parker

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Quartz amorphization: a dynamical instability

机译：石英非晶化：动态不稳定性

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The results of atomistic simulations based on the Born model of solids show that the crystalline-to-amorphous phase transition in a-quartz is the result of a dynamical instability. This work illustrates the potential of atomistic simulation to identify the atomic mechanisms for phase transformations. On applying high pressure to a-quartz, an acoustic vibrational mode became unstable, indicating supercell formation of size 3X3X1. Further increase in pressure resulted in the collapse of the crystalline structure to an amorphous solid displaying variations in bond length, bond angle and coordination number.

机译：基于固体的伯恩模型的原子模拟结果表明，a石英中晶体到非晶的相变是动态不稳定性的结果。这项工作说明了原子模拟识别相变原子机制的潜力。在对a石英施加高压时，声学振动模式变得不稳定，表明形成了3X3X1尺寸的超级单元。压力的进一步增加导致晶体结构塌陷成无定形固体，显示出键长，键角和配位数的变化。

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《Philosophical Magazine Letters》 |1995年第1期|共6页
作者
G. W. Watson; S. C. Parker;
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专利

1. DYNAMICAL INSTABILITIES IN ALPHA-QUARTZ AND ALPHA-BERLINITE - A MECHANISM FOR AMORPHIZATION [J] . Watson GW., Parker SC. Physical Review, B. Condensed Matter . 1995,第18期

机译：α-石英和α-贝利石的动力学不稳定性-氨化机理
2. Amorphization of α-quartz and comparative study of defects in amorphized quartz and Si nanocrystals embedded in amorphous silica [J] . Flyura Djurabekova, Matilda Backholm, Marie Backman, Nuclear Instruments & Methods in Physics Research . 2010,第19期

机译：α-石英的非晶化和非晶硅中嵌入的非晶硅和硅纳米晶体中缺陷的比较研究
3. Absence of single critical dose for the amorphization of quartz under ion irradiation [J] . Zhang S., Pakarinen O. H., Backholm M., Journal of Physics. Condensed Matter . 2018,第1期

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4. Molecular Dynamic Simulation of Surface Amorphization of NiTi under Dynamic Shock Peening [C] . Zhencheng Ren, Chang Ye, Yalin Dong ASME international manufacturing science and engineering conference . 2015

机译：动态冲击喷丸处理NiTi表面非晶化的分子动力学模拟
5. Amorphization and fracture in silicon selenium(2) nanowires: Molecular-dynamics simulations on parallel computer architectures. [D] . Li, Wei. 1996

机译：硅硒（2）纳米线中的非晶化和断裂：并行计算机体系结构上的分子动力学模拟。
6. Universal elastic-hardening-driven mechanical instability in α-quartz and quartz homeotypes under pressure [O] . Juncai Dong, Hailiang Zhu, Dongliang Chen -1

机译：α-石英和石英同源型在压力下的普遍弹性硬化驱动机械不稳定性
7. Kinetics of amorphization induced by swift heavy ions in α-quartz [O] . Peña Rodríguez Ovidio Y., Manzano Santamaría Javier, Rivera de Mena Antonio, 2012

机译：快速重离子在α石英中引起的非晶化动力学
8. Electron-Hole Carrier Dynamics in Single Crystal Quartz- Experimental Results and Application to Quartz Gauge Problems. [R] . hughes, r. c. 1973

机译：单晶石英中的电子 - 空穴载流子动力学 - 实验结果及其在石英量规问题中的应用。

Quartz amorphization: a dynamical instability

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