title: Vibrational, optical and structural studies of an amorphous Se(0.90)S(0.10) alloy produced by mechanical alloying.
abstract: The local atomic order of an amorphous Se(0.90)S(0.10) alloy produced by mechanical alloying was studied by x-ray diffraction and extended x-ray absorption fine structure (EXAFS) data obtained at three temperatures, T = 300, 200 and 30 K. From the cumulant analysis of the EXAFS data, structural properties such as average interatomic distances, average coordination numbers, Debye-Waller factors and anharmonicity, given by the third cumulant, were obtained. The results found indicate that there is alloying at an atomic level, and Se-S pairs are more disordered and distorted than Se-Se ones due to the milling process.
authors.affiliation: Departamento de Física, Centro Politécnico, Universidade Federal do Paraná, 81531-990, Curitiba, PR, Brazil.
authors.forename: K D
authors.initials: KD
authors.lastname: Machado
authors.forename: D F
authors.initials: DF
authors.lastname: Sanchez
authors.forename: G A
authors.initials: GA
authors.lastname: Maciel
authors.forename: S F
authors.initials: SF
authors.lastname: Brunatto
authors.forename: A S
authors.initials: AS
authors.lastname: Mangrich
authors.forename: S F
authors.initials: SF
authors.lastname: Stolf