Abstract
The vibrational density of states of amorphous beryllium hydride (a-Be H2) and lithium beryllium hydrides have been studied using inelastic neutron scattering, infrared, and Raman spectroscopies. The positions of the symmetrical (120-180 meV) and antisymmetrical (200-260 meV) Be-H stretching modes and those of the H-Be-H bending mode (50-120 meV) have been determined and the results discussed and compared with recent theoretical calculations. With the addition of lithium to the beryllium hydride network, the vibrational bands are shifted to lower energies, indicating a less rigid network.
| Original language | English |
|---|---|
| Article number | 134512 |
| Journal | Journal of Chemical Physics |
| Volume | 128 |
| Issue number | 13 |
| DOIs | |
| State | Published - 2008 |
| Externally published | Yes |
Funding
This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, (DE-AC02-06CH11357), the National Science Foundation (CHE-0612553), and the Carnegie DOE Alliance Center (CDAC) supported by the Department of Energy National Nuclear Security Administration and Arizona State University. The work at Argonne National Laboratory was supported by the Office of Basic Energy Sciences, Division of Materials Sciences, U.S. Department of Energy under Contract No. DE-AC02-06CH11357.