Structural and chemical homogeneity of chalcogenide glass prepared by melt-rocking

Pierre Lucas, Garrett J. Coleman, Sabyasachi Sen, Shuo Cui, Yann Guimond, Laurent Calvez, Catherine Boussard-Pledel, Bruno Bureau, Johann Troles

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The chemical and structural homogeneity of selenide glasses produced by mechanical homogenization of the melt in a rocking furnace is investigated by Raman and Energy Dispersive Spectroscopy (EDS). Both techniques demonstrate that the glass is macroscopically homogeneous along the entire length of a 6 cm rod. EDS imaging performed over four orders of magnitude in scale further confirms that the glass is homogeneous down to the sub-micron scale. An estimate of the diffusion coefficient from experimental viscosity data shows that the diffusion length is far larger than the resolution of EDS and therefore confirms that the glass is homogeneous at any length scale. In order to investigate a systematic mismatch in physical properties reported in the literature for glasses produced by extended static homogenization, two germanium selenide samples are produced under the same conditions except for the homogenization step: one in a rocking furnace for 10 h and the other in a static furnace for 192 h. No difference in physical properties is found between the two glasses. The properties of an ultra-high purity glass are also found to be identical. The origin of the systematic deviation reported in the literature for germanium selenide glasses is therefore still unknown, but the present results demonstrate that homogeneity or dryness does not have a significant contribution in contrast to previous suggestions. The implications of glass homogeneity for technological applications and industrial production are discussed.

Original languageEnglish (US)
Article number014505
JournalJournal of Chemical Physics
Volume150
Issue number1
DOIs
StatePublished - Jan 7 2019

Fingerprint

homogeneity
Glass
glass
selenides
homogenizing
Germanium
furnaces
Energy dispersive spectroscopy
Furnaces
germanium
Physical properties
physical properties
spectroscopy
diffusion length
suggestion
energy
purity
rods
diffusion coefficient
Viscosity

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Lucas, P., Coleman, G. J., Sen, S., Cui, S., Guimond, Y., Calvez, L., ... Troles, J. (2019). Structural and chemical homogeneity of chalcogenide glass prepared by melt-rocking. Journal of Chemical Physics, 150(1), [014505]. https://doi.org/10.1063/1.5054704

Structural and chemical homogeneity of chalcogenide glass prepared by melt-rocking. / Lucas, Pierre; Coleman, Garrett J.; Sen, Sabyasachi; Cui, Shuo; Guimond, Yann; Calvez, Laurent; Boussard-Pledel, Catherine; Bureau, Bruno; Troles, Johann.

In: Journal of Chemical Physics, Vol. 150, No. 1, 014505, 07.01.2019.

Research output: Contribution to journalArticle

Lucas, P, Coleman, GJ, Sen, S, Cui, S, Guimond, Y, Calvez, L, Boussard-Pledel, C, Bureau, B & Troles, J 2019, 'Structural and chemical homogeneity of chalcogenide glass prepared by melt-rocking', Journal of Chemical Physics, vol. 150, no. 1, 014505. https://doi.org/10.1063/1.5054704
Lucas, Pierre ; Coleman, Garrett J. ; Sen, Sabyasachi ; Cui, Shuo ; Guimond, Yann ; Calvez, Laurent ; Boussard-Pledel, Catherine ; Bureau, Bruno ; Troles, Johann. / Structural and chemical homogeneity of chalcogenide glass prepared by melt-rocking. In: Journal of Chemical Physics. 2019 ; Vol. 150, No. 1.
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