PHONON DISPERSION RELATIONS DATABASE
alpha-N_2
Space group: Pm-3n, No=223
Structural Parameters [1]: a=6.164(1)A
| Atoms |
x |
y |
z |
| N1 |
0.042 |
0.042 |
0.042 |
| N2 |
0.239 |
0.531 |
0.080 |
Phonon dispersion relations masured by neutron
scattering and calculated from 6-12 potential with 3 parameters [2].
References
- 1. D.T.Cromer et all,
Acta Crystallographica B
37B, 8-11 (1981).
- 2. J.K.Kjems and G.Dolling,
Phys.Rev. B
11, 1639 (1975).
<I> Phonon Dispersion Relations Database
PHONON DISPERSION RELATIONS DATABASE
NaCl
Space group: Fm-3m, No=225
Structural Parameters [1]: a=5.6402A
| Atoms |
x |
y |
z |
| Cl |
0.0000 |
0.0000 |
0.0000 |
| Na |
0.5000 |
0.5000 |
0.5000 |
Phonon dispersion relations masured by neutron
scattering [2] and from shell model with 11 parameters [3,4].
References
- 1. H.E.Swanson and R.K.Fuyat,
National Bureau of Standards, Circular
539, 41-43 (1953).
- 2. G.Raunio and S.Rolandson,
Phys.Rev. B
2, 2098 (1970).
- 3. O.N.Bolinin,
Sov.Phys.Solid State
18, 1415 (1976).
- 4. A.N.Basu and S.Sengupta in
Lattice Dynamics, ed. by M.Balkanski (Flamarion,
Paris 1978) p.43.
