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Relative contribution of stoichiometry and mean coordination to the fragility of Ge-As-Se glass forming liquids

Wang, Ting; Gulbiten, Ozgur; Wang, Rongping; Yang, Zhiyong; Smith, Anita; Luther-Davies, Barry; Lucas, Pierre

Description

The structural relaxation properties of 34 compositions of Ge-As-Se glass forming liquids are investigated by differential scanning calorimetry (DSC). The fragility index (m) and activation energies for enthalpy relaxation (E a) exhibit universal trends with respect to stoichiometry and mean coordination (〈r〉), respectively. The liquid fragility which defines the full temperature dependence of the relaxation processes shows no well defined trend with respect to 〈r〉 but instead is found to be...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
URI: http://hdl.handle.net/1885/69096
Source: Journal of Physical Chemistry B
DOI: 10.1021/jp412226w

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