منابع مشابه
International Workshop on Challenges of Atomistic Simulations of Glasses and Amorphous Materials
In contrast to diffraction methods, which deal with the coherence lengths ofabout 150 –200 nm, only very few unit cells of a definite structure are required forRaman scattering identification. This allows the micro-structural analysis ofamorphous materials. However, until the vibrational properties of glasses are betterunderstood in terms of their structure and bonding, vibratio...
متن کاملPhysics of Metallic Glasses and Amorphous Solids
Stronger than steel or titanium -and just as tough -metallic glasses are ideal materials for everything from cell-phone cases to aircraft parts. Replacing crystalline metals in the core of transformers, they can reduce significantly the energy losses. Typically, core loss can be 70%-80% less than with traditional crystalline materials, reducing the generation requirement, and when using electri...
متن کاملUniversal amorphous-amorphous transition in GexSe100−x glasses under pressure
Pressure induced structural modifications in vitreous GexSe100-x (where 10 ≤ x ≤ 25) are investigated using X-ray absorption spectroscopy (XAS) along with supplementary X-ray diffraction (XRD) experiments and ab initio molecular dynamics (AIMD) simulations. Universal changes in distances and angle distributions are observed when scaled to reduced densities. All compositions are observed to rema...
متن کاملAmorphous to amorphous insulator-metal transition in GeSe3:Ag glasses
We study an insulator-metal transition in a ternary chalcogenide glass (GeSe3)1−xAgx for x = 0.15 and 0.25. The conducting phase of the glass is obtained by using gap sculpting [Prasai et al., Sci. Rep. 5, 15522 (2015)] and it is observed that the metallic and insulating phases have nearly identical density functional energies but have a conductivity contrast of ∼108. As such, we demonstrate an...
متن کاملDislocations in amorphous materials
2014 The general aim of this paper is to provide a better understanding of amorphous materials, with special reference to glassy and granular systems, indicating areas where the behaviour of these two may be similar. We lay special emphasis on granular systems, as befits their importance as a newly emerging field of study in physics, and present a review of recent progress in understanding thei...
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ژورنال
عنوان ژورنال: Science
سال: 1995
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.267.5206.1887