Title
|
|
|
|
Positron annihilation study of nanocrystalline : 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
| |
DOI
|
|
|
|
10.4028/WWW.SCIENTIFIC.NET/MSF.363-365.94
| |
Volume/pages
|
|
|
|
363-3
(2001)
, p. 94-96
| |
ISI
|
|
|
|
000170202400023
| |
Full text (Publisher's DOI)
|
|
|
|
| |
|