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Properties and Structure of Glasses in the Systems M 2 O‐In 2 O 3 ‐GeO 2 (M = Li,Na,K)
Author(s) -
FAIRWEATHER M. J.,
MURTHY M. K.
Publication year - 1973
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.1151-2916.1973.tb12683.x
Subject(s) - refractive index , ternary operation , alkali metal , coordination number , materials science , ternary numeral system , mineralogy , ion , crystallography , analytical chemistry (journal) , chemistry , optoelectronics , organic chemistry , chromatography , computer science , programming language
The glass‐forming regions in the ternary systems M 2 O‐In 2 O 3 ‐GeO 2 (M = Li,Na,K) were determined. The region in each of the three ternaries is less extensive than in either of the analogous systems M 2 O‐Al 2 O 3 ‐GeO 2 and M 2 O‐Ga 2 O 3 ‐GeO 2 ; this behavior reflects the restrictive coordination requirements of the larger In ion. The In 2 O 3 ‐containing glasses exhibit higher densities and refractive indices than the corresponding Al 2 O 3 and Ga 2 O 3 ‐containing glasses. Refractive index and density maxima are observed along lines of constant In 2 O 3 in each of the three alkali indogermanate systems.