People | Locations | Statistics |
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Ferrari, A. |
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Schimpf, Christian |
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Dunser, M. |
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Thomas, Eric |
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Gecse, Zoltan |
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Tsrunchev, Peter |
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Della Ricca, Giuseppe |
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Cios, Grzegorz |
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Hohlmann, Marcus |
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Dudarev, A. |
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Mascagna, V. |
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Santimaria, Marco |
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Poudyal, Nabin |
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Piozzi, Antonella |
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Mørtsell, Eva Anne |
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Jin, S. |
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Noel, Cédric |
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Fino, Paolo |
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Mailley, Pascal |
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Meyer, Ernst |
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Zhang, Qi |
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Pfattner, Raphael | Brussels |
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Kooi, Bart J. |
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Babuji, Adara |
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Pauporte, Thierry |
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Hembree, William
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- 2016Structural changes during a liquid-liquid transition in the deeply undercooled $%5Cmathrm{Zr_{58.5}Cu_{15.6}Ni_{12.8}Al_{10.3}Nb_{2.8}}$ bulk metallic glass forming meltcitations
- 2015Linking Structure to Fragility in Bulk Metallic Glass-Forming Liquidscitations
- 2015High temperature rheology of Zr-based bulk metallic glass forming liquids ; Hochtemperatur Rheologie von Zr-basierenden metallischen massivglasbildenden Flüssigkeiten
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article
Structural changes during a liquid-liquid transition in the deeply undercooled $%5Cmathrm{Zr_{58.5}Cu_{15.6}Ni_{12.8}Al_{10.3}Nb_{2.8}}$ bulk metallic glass forming melt
Abstract
Using high energy synchrotron x-ray radiation combined with electrostatic levitation, in situ structural analysisof a bulk metallic glass forming liquid is performed from above the liquidus temperature down to the glasstransition. The data indicate a liquid-liquid transition (LLT) in the deeply undercooled state at T /Tg ∼ 1.2 whichmanifests as a maximum in the heat capacity and an abrupt shift in the first peak position of the total structurefactor in the absence of a pronounced density change. Analysis of the corresponding real-space data showsthat the LLT involves changes in short- and medium-range order. The structural changes on the length scale ofmedium-range order imply a fragile-strong transition in agreement with experimental viscosity data