INELASTIC NEUTRON-SCATTERING STUDY OF HYDROGEN IN NANOCRYSTALLINE PD

Authors
STUHR U WIPF H UDOVIC TJ WEISSMULLER J GLEITER H
Citation
U. Stuhr et al., INELASTIC NEUTRON-SCATTERING STUDY OF HYDROGEN IN NANOCRYSTALLINE PD, Nanostructured materials, 6(5-8), 1995, pp. 555-558
Citations number
10
Categorie Soggetti
Material Science
Journal title
Nanostructured materials → ACNP
ISSN journal
09659773
Volume
6
Issue
5-8
Year of publication
1995
Pages
555 - 558
Database
ISI
SICI code
0965-9773(1995)6:5-8<555:INSOHI>2.0.ZU;2-G
Abstract
The vibrational excitations and the position of hydrogen, in nanocryst alline Pd was investigated by neutron spectroscopy. This study was res tricted to low hydrogen concentrations (less than or equal to 4.8 at%) where no hydrogen, precipitation was observed at room temperature. Th e experiments show that most of the hydrogen is incorporated in the gr ain boundaries and at the inner surfaces of the grains. Surface modes of the hydrogen can be identified. Compared to coarse-grained Pd, no c hange in the hydrogen solubility was found for the lattice regions of the nanocrystalline Pd.