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Proceedings Paper

Structural and optical properties of chalcogenide glass-ceramics
Author(s): Leah Boehm; Haim Assaf
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Paper Abstract

A chalcogenide base-glass of the Ge-Se-Te system was nucleated by various amounts (0.1- 0.50 mol%) of either ZrSe2 or ZrTe2. The aim of this study was to produce chalcogenide glass-ceramic materials with extended transmission in the infrared, up to 15 micrometers . The thermal, structural, and optical properties of such materials were investigated using DSC, SEM, EDAX, and FT-IR techniques. It was found that even small amounts of impurities, such as oxygen, cause uncontrolled nucleation and crystallization. The measurements revealed that in such cases, the crystalline particles formed in 'as quenched' glasses were those of the oxidized raw materials: SeO2; GeO2; or ZrO2, and the transmission was greatly reduced even without further heat-treatment. In case of glasses prepared from purified starting materials, the nuclei formed were too small to be detected by x-ray analysis. The crystals formed after heat-treatment were GeSe2 or GeTe2. No apparent difference was found in the effect of either ZrSe2 or ZrTe2 on the thermal and optical properties of the prepared materials.

Paper Details

Date Published: 1 November 1991
PDF: 11 pages
Proc. SPIE 1535, Passive Materials for Optical Elements, (1 November 1991); doi: 10.1117/12.48314
Show Author Affiliations
Leah Boehm, Soreq Nuclear Research Ctr. (Israel)
Haim Assaf, Soreq Nuclear Research Ctr. (Israel)

Published in SPIE Proceedings Vol. 1535:
Passive Materials for Optical Elements
Gary W. Wilkerson, Editor(s)

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