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Conference papers
Free-volume structure of glass-As2Se3/PVP nanocomposites prepared by mechanochemical milling
Abstract : Atomic-deficient void structure is studied in nanocomposites prepared by mechanochemical milling of glassy g-As2Se3 in a water solution of polyvinylpyrrolidone (PVP) employing positron annihilation lifetime spectroscopy. Formalism of Ps-to-positron trapping conversion known as x3-x2-CDA (coupling decomposition algorithm) is applied to identify free-volume defects in the pelletized g-As2Se3/PVP nanocomposite in respect to dry-milled g-As2Se3 one. Under wet-milling, the inter-nanoparticle Ps-decaying sites in preferential PVP environment replace free-volume positron traps (in dry-milled g-As2Se3) with defect-specific lifetime of 0.352 ns, corresponding to di-/tri-atomic vacancies in g-As-Se. © 2018 Author(s).
Cited literature [22 references]
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01874719
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, September 18, 2018 - 1:58:49 PM
Last modification on : Wednesday, April 7, 2021 - 3:18:10 PM
Long-term archiving on: : Wednesday, December 19, 2018 - 2:35:55 PM
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, September 18, 2018 - 1:58:49 PM
Last modification on : Wednesday, April 7, 2021 - 3:18:10 PM
Long-term archiving on: : Wednesday, December 19, 2018 - 2:35:55 PM
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