The aging of some metal doped As2S3 glasses

摘要

It is shown that powdered glassy samples of Sn, Ag and Cu doped As2S3exhibit a partial crystallization after twenty years of storage in ambient conditions. The crystalline phases are AsS and sulphur but also some As4S3and traces of As2O3were revealed on X-ray diagrams of tin doped glasses. The separation of AsS was evidenced on the surfaces of diamond-cut As2S3samples. No crystallization was observed in glassy ingots