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From nanoglasses to bulk massive glasses

Sopu, D. and Albe, K. and Ritter, Y. and Gleiter, H. (2009):
From nanoglasses to bulk massive glasses.
In: Appl. Phys. Lett., American Institute of Physics, pp. 191911-2, 94, (19), ISSN 0003-6951,
[Online-Edition: http://apl.aip.org/resource/1/applab/v94/i19/p191911_s1],
[Article]

Abstract

Molecular dynamics simulations are presented that provide evidence for the existence of diluted interfaces in nanoglasses, which is a class of material that can be synthesized by consolidating glassy nanoparticles. By comparing simulations of a covalently bonded Ge nanoglass and a metallic CuZr nanoglass, we show that the delocalization of the excess free volume initially located within the interfaces depends on the flow strain of the material. Our results suggest that the density distribution within a nanoglass can be controlled by the initial particle size and the annealing conditions. Therefore, nanoglasses represent an alternative route for controlling the properties of glassy materials.

Item Type: Article
Erschienen: 2009
Creators: Sopu, D. and Albe, K. and Ritter, Y. and Gleiter, H.
Title: From nanoglasses to bulk massive glasses
Language: English
Abstract:

Molecular dynamics simulations are presented that provide evidence for the existence of diluted interfaces in nanoglasses, which is a class of material that can be synthesized by consolidating glassy nanoparticles. By comparing simulations of a covalently bonded Ge nanoglass and a metallic CuZr nanoglass, we show that the delocalization of the excess free volume initially located within the interfaces depends on the flow strain of the material. Our results suggest that the density distribution within a nanoglass can be controlled by the initial particle size and the annealing conditions. Therefore, nanoglasses represent an alternative route for controlling the properties of glassy materials.

Journal or Publication Title: Appl. Phys. Lett.
Volume: 94
Number: 19
Publisher: American Institute of Physics
Uncontrolled Keywords: annealing, copper alloys, germanium, glass structure, interface structure, metallic glasses, molecular dynamics method, nanoparticles, particle size, zirconium alloys
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
Date Deposited: 22 Feb 2012 16:17
Official URL: http://apl.aip.org/resource/1/applab/v94/i19/p191911_s1
Identification Number: doi:10.1063/1.3130209
Related URLs:
Funders: The authors acknowledge the financial support of the Deutsche Forschungsgemeinschaft �DFG� through project Grant No. Al-578-6., One of us �H.G.� was supported by Karlsruhe Institute of Technology �KIT� through a grant within the NES-program., A DAAD-PPP travel grant is also acknowledged. Computing time was made available by HHLR Frankfurt and Darmstadt as well as by CSC Julich.
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