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Phase Separation in Chalcogenide Glasses: The System AgAsSSe
Author(s) -
Stehlik S.,
Kolar J.,
Haneda H.,
Sakaguchi I.,
Frumar M.,
Wagner T.
Publication year - 2011
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/j.2041-1294.2011.00065.x
Subject(s) - chalcogenide , materials science , scanning electron microscope , analytical chemistry (journal) , phase (matter) , atomic force microscopy , chalcogenide glass , ion , crystallography , nanotechnology , chemistry , metallurgy , chromatography , composite material , organic chemistry
We report on visualization of a phase separation in Ag x ( As 0.33 S 0.67 ) 100− x and Ag x ( As 0.33 S 0.335 Se 0.335 ) 100− x chalcogenide glasses by means of atomic force microscopy ( AFM ). Sufficient topographical contrast (~20 nm) was achieved by selective polishing of a phase‐separated sample ( Ag ‐poor, Ag ‐rich regions) and phase separation occurred within 0.5–20 at.% Ag and 2–18 at.% Ag in Ag x ( As 0.33 S 0.67 ) 100− x and Ag x ( As 0.33 S 0.335 Se 0.335 ) 100− x systems, respectively. Homogenous regions were observed below and above the phase separation lower and upper limits. Direct comparison of scanning electron microscopy and atomic force microscopy sensitivity of phase separation detection is shown. In addition, concentration of silver in particular phases of AgAsS system was evaluated by NanoSIMS (secondary ion mass spectroscopy) and very similar concentration of silver was detected in the phases at boundaries of immiscibility region.