Microstructure of Ag2S-As2S3 glasses

A. Piarristeguy, M. Ramonda, N. Kuwata, A. Pradel, M. Ribes

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    16 Citations (Scopus)

    Abstract

    Field effect-scanning electron microscopy (FE-SEM) and electric force microscopy (EFM) measurements were carried out on bulk Ag2S-As2S3 glasses with silver concentrations 1.2, 4 and 9.8 at.%. While the first glass was found to be homogeneous, the presence of chemical contrasts and electrical heterogeneousness throughout the other two samples indicated that the glasses were phase separated. Moreover, it appeared that, while silver-rich nodules of 200-350 nm were embedded in a silver-poor connecting phase in the glass containing 4 at.% Ag, it was the opposite that occurred in the glass containing 9.8 at.% Ag. Such an inversion explained the large difference of 4-5 orders of magnitude in the conductivity of the two glasses.

    Original languageEnglish
    Pages (from-to)3157-3160
    Number of pages4
    JournalSolid State Ionics
    Volume177
    Issue number35-36
    DOIs
    Publication statusPublished - 2006 Nov 30

    Keywords

    • Chalcogenide glasses
    • Electric force microscopy
    • Field effect scanning microscopy
    • Phase separation

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

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