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Glass Formation and Properties of Chalcogenides in a GeSe 2 –As 2 Se 3 –PbSe System
Author(s) -
Yang Guang,
Zhang Xianghua,
Ren Jing,
Yunxia Yang,
Chen Guorong,
Ma Hongli,
Adam J. L.
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01562.x
Subject(s) - differential scanning calorimetry , crystallization , materials science , annealing (glass) , activation energy , molar volume , analytical chemistry (journal) , transmittance , mineralogy , diffraction , crystallography , thermodynamics , chemistry , optics , composite material , physics , chromatography , optoelectronics
The glass‐forming region in a GeSe 2 –As 2 Se 3 –PbSe system was determined, and the dependence of properties on the composition as a formula of 20 GeSe 2 –(80− x )As 2 Se 3 − x PbSe ( x =0–30) was investigated. Measurements include density, differential scanning calorimetry, X‐ray diffraction, Vis‐NIR, and IR transmission spectra. A fairly large glass‐forming region was obtained where the higher lead content could be introduced into the system in the As 2 Se 3 ‐rich region than in the GeSe 2 ‐rich region. With the introduction of PbSe, the density of glass increased and the calculated molar volume decreased while the crystallization tendency increased, which was indicated by the decreasing Δ T ( T x − T g ). The activation energy of crystallization and the Avrami exponents were also obtained using the modified Ozawa equation. Under proper annealing conditions, suitable IR transmittance glass–ceramics were obtained.