Stolpe, M and Jonas, I and Wei, S and Hambree, W and Evenson, Z and Yang, F and Meyer, A and Busch, R (2016) Structural changes during a liquid-liquid transition in the deeply undercooled Zr58.5Cu15.6Ni12.8Al10.3Nb2.8 bulk metallic glass forming melt. Physical Review B. American Physical Society. doi: 10.1103/PhysRevB.93.014201. ISSN 2469-9950.
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Abstract
Using high energy synchrotron x-ray radiation combined with electrostatic levitation, in situ structural analysis of a bulk metallic glass forming liquid is performed from above the liquidus temperature down to the glass transition. The data indicate a liquid-liquid transition (LLT) in the deeply undercooled state at T/Tg∼1.2 which manifests as a maximum in the heat capacity and an abrupt shift in the first peak position of the total structure factor in the absence of a pronounced density change. Analysis of the corresponding real-space data shows that the LLT involves changes in short- and medium-range order. The structural changes on the length scale of medium-range order imply a fragile-strong transition in agreement with experimental viscosity data.
Item URL in elib: | https://elib.dlr.de/109867/ | |||||||||||||||||||||||||||
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Document Type: | Article | |||||||||||||||||||||||||||
Title: | Structural changes during a liquid-liquid transition in the deeply undercooled Zr58.5Cu15.6Ni12.8Al10.3Nb2.8 bulk metallic glass forming melt | |||||||||||||||||||||||||||
Authors: |
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Date: | January 2016 | |||||||||||||||||||||||||||
Journal or Publication Title: | Physical Review B | |||||||||||||||||||||||||||
Refereed publication: | Yes | |||||||||||||||||||||||||||
Open Access: | Yes | |||||||||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||||||||
In SCOPUS: | Yes | |||||||||||||||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||||||||||||||
DOI: | 10.1103/PhysRevB.93.014201 | |||||||||||||||||||||||||||
Publisher: | American Physical Society | |||||||||||||||||||||||||||
ISSN: | 2469-9950 | |||||||||||||||||||||||||||
Status: | Published | |||||||||||||||||||||||||||
Keywords: | x-ray, liquid-liquid transition | |||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||||||||||||||
HGF - Program: | Space | |||||||||||||||||||||||||||
HGF - Program Themes: | Research under Space Conditions | |||||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | |||||||||||||||||||||||||||
DLR - Program: | R FR - Research under Space Conditions | |||||||||||||||||||||||||||
DLR - Research theme (Project): | R - Materials Research and Microgravity (MuM) | |||||||||||||||||||||||||||
Location: | Köln-Porz | |||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Materials Physics in Space | |||||||||||||||||||||||||||
Deposited By: | Hardt, Kim | |||||||||||||||||||||||||||
Deposited On: | 03 Jan 2017 08:58 | |||||||||||||||||||||||||||
Last Modified: | 19 Oct 2021 09:54 |
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