Publication
Title
Positron annihilation study of nanocrystalline $Ni_{3}Al$ : simulations and measurements
Author
Abstract
 A positron lifetime experiment is performed on samples produced by the compaction of nanocrystalline Ni3Al powder synthesized by the inert-gas condensation technique. In the lifetime spectrum we observe two components corresponding to defects. Computer (virtual) samples of n-Ni3Al are obtained using molecular dynamics combined with the Metropolis Monte Carlo technique. Positron lifetime calculations are then performed on selected regions of simulated samples. For this purpose, a new computational technique based on a generalization of the atomic superposition method for non-periodic systems was developed. Lifetimes calculated in this way are compared to experiment.
Language
English
Source (journal)
Materials science forum. - Lausanne, 1984, currens
Source (book)
12th International Conference on Positron Annihilation (ICPA-12), AUG 06-12, 2000, UNIV BUNDERSWEHR MUNCHEN, NEUBIBERG, GERMANY
Publication
Lausanne : 2001
ISBN
0-87849-875-3
Volume/pages
363-3(2001), p. 94-96
ISI
000170202400023
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address