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Cesium Fluoride
Crystal: CsF
Structure: NaCl
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Lattice formation energy: |
-7.54 eV.(theory, Mayer et al.) (Ref.1) |
Lattice parameter: |
3.00 Å |
Density: |
g/cm3 |
Stiffness constants: in 1011 dynes/cm2, at room temperature
c11: 4.6
c12: 1.6
c44: 0.8
Compressibility (in 1011 dynes/cm2):
Poisson ratio:
Debye temperature: K
Melting temperature: K
Phonon spectrum discussed by:
J.R. Hardy & A.M. Karo, Lattice dynamics & second-order Raman spectrum of CsF, Phys. Rev. 168, 980 (1968)
Also: For neutron data:
S. Rolandson, Lattice dynamics of Cesium Fluoride Phys.Stat.Sol. 52, 643 (1972)
Transverse optic phonon T0 (k=0): cm-1
Longitude optic phonon L0 (k=0): cm-1
Gruneissen constant:
Ratio e*/e:
Photoelastic constants:
p11:
p12:
p44:
Band gap:
direct: eV. at K
indirect: eV. at ° K
Plasmon energy: eV.
Exciton energy: eV.
Valence band width: 2.9 eV.
Band structure discussed by:
Static dielectric constant: 7.90 (Ref.2)
Optic dielectric constant:
Electron mobility:
Hole mobility:
Polaron coupling constant:
Effective mass: conduction band:
valence band:
Electron affinity: ( in eV., from bottom of conduction band under vacuum)
Spin-orbit coupling: ( valence band)
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References:
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