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Surface migration and volume diffusion in the AgGaSe2-Ag2Se systemSurface migration and volume diffusion in the Ag2Se-AgGaSe2 system were investigated using reactive diffusion couples which were analyzed by X-ray diffraction, optical microscopy, and electron probe microanalysis. The surface diffusivities of all mobile species are found to be much larger than volume diffusivities. The results of the study suggest that Se moves together with Ag and Ga to maintain binary (Ag2Se and Ga2Se3) stoichiometry and electroneutrality. The dominance of surface migration kinetics can account for the uniform annihilation of second-phase precipitates during heat treatments.
Document ID
19920054474
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kim, N.-H.
(NASA Headquarters Washington, DC United States)
Feigelson, R. S.
(NASA Headquarters Washington, DC United States)
Route, R. K.
(Stanford University CA, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1992
Publication Information
Publication: Journal of Materials Research
Volume: 7
Issue: 5, Ma
ISSN: 0884-2914
Subject Category
Solid-State Physics
Accession Number
92A37098
Distribution Limits
Public
Copyright
Other

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