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Preparation and Properties of Heavy‐Metal Fluoride Glasses Containing Ytterbium or Lutetium
Author(s) -
Drexhage M. G.,
ElBayoumi O. H.,
Moynihan C.T.,
Bruce A. J.,
Chung K.H.,
Gavin D. L.,
Loretz T. J.
Publication year - 1982
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.1151-2916.1982.tb10353.x
Subject(s) - lutetium , ytterbium , fluoride , materials science , absorption (acoustics) , metal , analytical chemistry (journal) , refractive index , mineralogy , inorganic chemistry , chemistry , doping , metallurgy , composite material , optoelectronics , yttrium , chromatography , oxide
Beginning with a 19BaF 2 −27ZnF 2 −27YbF 3 −27ThF 4 (mol%) base glass, compositional modifications were made to improve optical properties and glass‐forming ability. Replacement of YbF 3 by LuF 3 removed a strong near‐ir electronic absorption band, and small additions of LiF and NaF improved glass quality. The multicomponent BaF 2 /ThF 4 glasses had higher refractive indices and lower expansion coefficients than fluorozirconate and fluorohafnate glasses. In the 6 to 10 μm region, these materials exhibit absorption coefficients an order of magnitude lower than those reported for other heavy‐metal fluoride glasses.