Fused quartz - Wikipedia
Fused quartz, fused silica or quartz glass is a glass consisting of almost pure silica (silicon dioxide, SiO 2) in amorphous (non-crystalline) form.
Amorphous Quartz - Silica Xerogel - Advancing Materials
2019年9月24日 · Amorphous quartz is the non-crystalline form of silica and has applications in pharmaceutical drug delivery. Learn how to analyze amorphous quartz with XRD.
Quartz - Wikipedia
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared …
Origin of strong-field-induced low-order harmonic generation in ...
2020年6月29日 · Strong-field-induced nonlinearities from the injection of electrons into the conduction band contribute to harmonic generation in amorphous quartz. Close to the damage …
Mineralogy and mineral chemistry of quartz: A review
Long-term exposures to quartz and other silica forms (e.g. cristobalite and amorphous silica) are known to cause serious and potentially life-threatening diseases such as silicosis, fibrosis and …
Amorphization by mechanical deformation - ScienceDirect
2022年6月1日 · It has at least three crystalline forms, commonly referred to as polymorphs (quartz, cristobalite, tridymite, and others); its amorphous form is known as glass. It is not easy …
Evidence for a rosiaite-structured high-pressure silica phase and its ...
2023年2月4日 · These experiments provide evidence for the transformation of quartz at pressures above 15 GPa to lamellae of a metastable rosiaite (PbSb 2 O 6)-type high-pressure phase …
Microstructural Observations of α-Quartz Amorphization | Science …
1993年1月29日 · Microscopic observations indicate that amorphization of a-quartz begins with formation of crystallographically controlled planar defects and is followed by growth of …
2017年3月31日 · 21 stability of α-quartz is controlled by its phonon instability and α-quartz collapses into a different 22 crystalline phase. Our studies reveal that pressure-induced solid …
Phys. Rev. B 105, 134106 (2022) - Anomalous density, sound …
2022年4月14日 · The pressure-induced amorphous quartz has a lower density relative to that of the compressed glass, consistent with the lower average coordination inferred from a different …