منابع مشابه
Physics 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 کاملSPIN-GLASSES IN AMORPHOUS (Ni100-x Fex) 79P1 3B8 ALLOYS
Dilute amorphous (Niioo-xe )79138 alloys exhibit usual characteristics of spin glasses : freezing temperatures T (sharp cusp in zero-field susceptibility) proportional to x up to x=4 at. %. However, the magnetization does not follow the Blandin-Souletie-Tournier scaling laws. Such an anomaly can be explained within a model of ferromagnetic clusters coupled bt RKKY interaction. INTRODUCTION.From...
متن کاملPressure-induced amorphous-to-amorphous configuration change in Ca-Al metallic glasses
Pressure-induced amorphous-to-amorphous configuration changes in Ca-Al metallic glasses (MGs) were studied by performing in-situ room-temperature high-pressure x-ray diffraction up to about 40 GPa. Changes in compressibility at about 18 GPa, 15.5 GPa and 7.5 GPa during compression are detected in Ca(80)Al(20), Ca(72.7)Al(27.3), and Ca(66.4)Al(33.6) MGs, respectively, whereas no clear change has...
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ژورنال
عنوان ژورنال: Nature
سال: 1987
ISSN: 0028-0836,1476-4687
DOI: 10.1038/326252b0