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Melt property variation in GeSe 2 ‐As 2 Se 3 ‐PbSe glass ceramics for infrared gradient refractive index (GRIN) applications
Author(s) -
Yadav Anupama,
Buff Andrew,
Kang Myungkoo,
Sisken Laura,
Smith Charmayne,
Lonergan Jason,
Blanco Cesar,
Antia Michael,
Driggers Megan,
Kirk Andrew,
RiveroBaleine Clara,
Mayer Theresa,
Swisher Andrew,
Pogrebnyakov Alexej,
Hilton AR,
Whaley Greg,
Loretz Thomas J.,
Yee Anthony,
Schmidt Greg,
Moore Duncan T.,
Richardson Kathleen A.
Publication year - 2019
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.12618
Subject(s) - materials science , refractive index , nucleation , crystallization , microstructure , ceramic , chalcogenide , chalcogenide glass , homogeneity (statistics) , physical property , composite material , mineralogy , thermodynamics , optoelectronics , statistics , physics , mathematics , chemistry
Abstract Melt size‐dependent physical property variation is examined in a multicomponent GeSe 2 ‐As 2 Se 3 ‐PbSe chalcogenide glass developed for gradient refractive index applications. The impact of melting conditions on small (40 g) prototype laboratory‐scale melts extended to commercially‐relevant melt sizes (1.325 kg) have been studied and the role of thermal history variation on physical and optical property evolution in parent glass, the glass’ crystallization behavior and postheat‐treated glass ceramics, is quantified. As‐melted glass morphology, optical homogeneity and heat treatment‐induced microstructure following a fixed, two‐step nucleation and growth protocol exhibit marked variation with melt size. These attributes are shown to impact crystallization behavior (growth rates, resulting crystalline phase formation) and induced effective refractive index change, n eff , in the resulting optical nanocomposite. The magnitude of these changes is discussed based on thermal history related melt conditions.