title: Destructive Clustering of Metal Nanoparticles in Chalcogenide and Oxide Glassy Matrices.
abstract: The energetic χ-criterion is developed to parameterize difference in the origin of high-order optical non-linearity associated with metallic atoms (Cu, Ag, Au) embedded destructively in oxide- and chalcogenide glasses. Within this approach, it is unambiguously proved that covalent-bonded networks of soft semiconductor chalcogenides exemplified by binary As(Ge)-S(Se) glasses differ essentially from those typical for hard dielectric oxides like vitreous silica by impossibility to accommodate pure agglomerates of metallic nanoparticles. In an excellence according to known experimental data, it is suggested that destructive clustering of nanoparticles is possible in Cu-, Ag-, and Au-ion-implanted dielectric oxide glass media, possessing a strongly negative χ-criterion. Some recent speculations trying to ascribe equally this ability to soft chalcogenide glasses despite an obvious difference in the corresponding bond dissociation energies have been disclosed and criticized as inconclusive.
authors.affiliation: Lviv Polytechnic National University, Bandera str., 12, Lviv, 79013, Ukraine. shpotyukmy@yahoo.com.
authors.forename: M V
authors.initials: MV
authors.lastname: Shpotyuk
authors.affiliation: Jan Dlugosz University of Czestochowa, al. Armii Krajowej, 13/15, Czestochowa, 42200, Poland.|Vlokh Institute of Physical Optics, Dragomanov str., 23, Lviv, 79005, Ukraine.|Institute of Materials of SRC "Carat", Stryjska str., 202, Lviv, 79031, Ukraine.
authors.forename: O I
authors.initials: OI
authors.lastname: Shpotyuk
authors.affiliation: Centre for Innovation and Transfer of Natural Sciences and Engineering Knowledge, Prof. Stanislawa Pigonia str., 1, Rzeszow, 35310, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Cebulski
authors.affiliation: N.S. Kurnakov Institute of General and Inorganic Chemistry, 31 Leninsky pr., Moscow, 199991, Russia.
authors.forename: S
authors.initials: S
authors.lastname: Kozyukhin
keywords: Chalcogenides; Chemical bond; Glass; Host matrix; Nanoparticle