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Modified preparation procedure for laboratory melting of multicomponent chalcogenide glasses

Authors
Journal
Journal of Non-Crystalline Solids
0022-3093
Publisher
Elsevier
Publication Date
Volume
139
Identifiers
DOI: 10.1016/s0022-3093(05)80813-0

Abstract

High purity mid IR-transparent chalcogenide glasses are generally prepared by vacuum melting of 5–6 N pure raw materials such as Ge, Sb, Se, As and Te. For laboratory samples, a modified technique is proposed which involves a combination of surface oxide removal prior to, and distillation, melting and annealing after, batching the raw materials without breaking vacuum. Se, As and Te were distilled in sequence simply by increasing the temperature in steps. The need for porous quartz frit used by previous researchers during distillation was eliminated, thus reducing the possibility of impurity inclusions.

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