Intrinsic Nanoscale Phase Seperation of bulk As2S3 Glass

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dc.creatorGeorgiev, D. G.
dc.creatorBoolchand, P.
dc.creatorJackson, K. A.
dc.date2003-08-05
dc.date.accessioned2026-07-07T02:52:47Z
dc.date.available2026-07-07T02:52:47Z
dc.descriptionRaman scattering on bulk AsxS1-x glasses showes that vibrational modes of As4S4 monomer first appear near x=0.38, and their concentration increases precipitously with increasing x, suggesting that the stoichiometric glass (x=0.40) is intrinsically phase seperated into small As-rich(As4S4) and large S-righ clusters. Support for the Raman-active vibrational modes of the orpiment-like and realgar-like nanophases is provided by ab-initio density functional theory calculations on appropriate clusters. Nanoscale phase seperation provides a basis for understanding the global maximum in the glass transition temperature Tg near x=0.40, and the departure from Arrhenius temperature activation of As2S3 melt viscosities.
dc.identifierhttps://arxiv.org/abs/cond-mat/0308094
dc.identifierhttp://arxiv.org/abs/cond-mat/0308094
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21967
dc.subjectMaterials Science
dc.titleIntrinsic Nanoscale Phase Seperation of bulk As2S3 Glass
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