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Colors and Magnetic Properties of Iron in Glasses of Various Types and Their Implicationsoncerning Structure: II, Cabal Glasses
Author(s) -
BISHAY ADLI
Publication year - 1961
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.1151-2916.1961.tb15340.x
Subject(s) - ferrous , magnetic susceptibility , ferric iron , ferric , chemistry , absorption (acoustics) , mineralogy , materials science , inorganic chemistry , analytical chemistry (journal) , metallurgy , crystallography , composite material , chromatography
The effect of changes in the glass structure on the colors and magnetic susceptibilities of iron was studied in glasses made of CaO, B 2 O 3 , and Al 2 O 3 (cabal glasses). As the number of gaps in the structure increased, an increase in the general absorption and a decrease in magnetic susceptibility was observed and was attributed to ferrous iron in network‐forming positions. Further increase in the number of gaps was accompanied by a general increase in transmission as well as by an increase in magnetic susceptibility. This was attributed to the loosening of the structure around the ferrous iron which could easily escape from the interstices and be oxidized to colorless ferric iron taking network‐forming positions. The intensity of the ferrous band depended on the concentration of the ferrous iron and also was affected by the polarizing power of the neighboring cations.