Premium
Transparent and High Refractive Index La 2 O 3 – WO 3 Glass Prepared Using Containerless Processing
Author(s) -
Yoshimoto Kohei,
Masuno Atsunobu,
Inoue Hiroyuki,
Watanabe Yasuhiro
Publication year - 2012
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.1551-2916.2012.05439.x
Subject(s) - refractive index , glass transition , crystallization , materials science , infrared , high refractive index polymer , analytical chemistry (journal) , visible spectrum , mineralogy , chemistry , optics , optoelectronics , polymer , physics , composite material , organic chemistry , chromatography
Transparent and high refractive index 0.2 La 2 O 3 ·0.8 WO 3 glass was prepared in bulk form using containerless processing. The glass transition temperature, crystallization onset temperature, and melting temperature were 553°C, 594°C, and 1043°C, respectively. The glass was colorless and widely transparent, in the visible to infrared region, indicating that the valence state of the W ion was 6. The refractive index was 2 in the visible range, and the Abbe number estimated from the Drude–Voigt relationship was 24. These results indicate that the La 2 O 3 – WO 3 glass would be useful for optical applications in the visible to infrared region.