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Rubidium Chloride
Crystal:
RbClStructure: NaCl
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Lattice formation energy: |
-6.91 eV |
Lattice parameter: |
3.27 Å (3.259 at 0K.) |
Density: |
g/cm3 |
Remark: CsCl form also occurs. |
Lattice parameter: 3.24 for CsCl form |
Stiffness constants: in 1011 dynes/cm2, at room temperature
c11: 4.295 (4.499 at 0K.) (Ref.1, also Other Information)
c12: 0.649 (0.676 at 0K.)
c44: 0.493 (0.497 at 0K.)
More information:
Third order elastic constants of Rubidium Chloride, R.J. Wallat & J. Holder, J. Phys .Chem. Sol. 38, 1227 (1977)
Compressibility (in 1011 dynes/cm2): 0.536 ??
Poisson ratio:
Debye temperature: 168 K
Melting temperature: K
Phonon spectrum discussed by:
G. Raunio & S. Rolandson, Lattice dynamics of NaCl, KCl, RbCl & RbF, Phys. Rev. B2, 2098 (1970)
Transverse optic phonon T0 (k=0): 126 cm-1 or 2.22*1013/sec.
Longitude optic phonon L0 (k=0): 182 cm-1 (Hodby)
Gruneissen constant:
Ratio e*/e: 0.84
Photoelastic constants:
p11:
p12:
p44:
Band gap:
direct: eV. at K
indirect: eV. at ° K
Plasmon energy: eV.
Exciton energy: 7.54 eV. (Ref.2)
Band structure discussed by:
More information:
Ultraviolet electron spectra of Rubidium halides, C.S. Inouye & W. Pong, Phys. Rev. B15, 2265 (1972)
Static dielectric constant: 5.0 or 4.53
Optic dielectric constant: 2.19 or 2.20
Electron mobility:
Hole mobility:
Polaron coupling constant:
a
= 4.14 ( for m*=1 )a
= 3.78 or 3.99 (Hodby)
Effective mass:
conduction band: 0.515 (band mass), also 0.435 or 0.485 (Hodby)
Polaron mass: 1.03(±0.1)
valence band:
Electron affinity: ( in eV., from bottom of conduction band under vacuum)
0.50(±0.05) (Ref.3)
0.51(±0.05) (Ref.4)
3.72 (estimation of Mott & Gurney, Ref.5)
Spin-orbit coupling: 0.13 ( valence band) (Ref.6)
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References:
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