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Cesium Chloride
Crystal:
CsCl Structure: CsCl(Crystal b -CsCl Structure: NaCl)
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Lattice formation energy: |
-6.61 eV. (theory, Mayer et al.) (Ref.1) |
-6.56 (experimental) (Ref.1) |
|
Lattice parameter: |
3.56 Å for CsCl |
(3.51 Å for b -CsCl) |
|
Density: |
g/cm3 |
Stiffness constants: in 1011 dynes/cm2, at room temperature
c11: 3.64 or 3.683 (Ref.2)
c12: 0.92 or 0.893
c44: 0.80 or 0.817
Compressibility (in 1011 dynes/cm2): 0.547 ??
Poisson ratio:
Debye temperature: K
Melting temperature: K
Phonon spectrum discussed by:
J.F. Vetelino, Lattice dynamics, mode Gruneisen parameters & coefficient of thermal expansion of CsCl, CsBr & CsI, Phys. Rev. B2, 2167 (1970)
Also: A.A.Z. Ahmad, H.G. Smith N. Wakayashi & M.K. Wilkinson, Lattice dynamics of Cesium Chloride, Phys.Rev. B6, 3956 (1972)
Transverse optic phonon T0 (k=0): 99 cm-1
Longitude optic phonon L0 (k=0): cm-1
Gruneissen constant:
Ratio e*/e: 0.85
Photoelastic constants:
p11:
p12:
p44:
Band gap:
direct: eV. at K
indirect: eV. at ° K
Plasmon energy: eV.
Exciton energy: 7.85 eV. (Ref.3)
Band structure discussed by:
L. Nosenzo & E. Reguzzoni, Analysis of the electronic structure in Cesium halides by deflectance & thermoreflectance studies,Phys.Rev.B19,2319 (1979)
Also: E. Boursey and J.-Y. Rongin, Absorption spectra of Cesium halides at 20K. from 12 to 20 eV., Sol. State Com. 9, 1049 (1971)
Static dielectric constant: 7.20
Optic dielectric constant: 2.60
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:
1. C. Kittel, "Introduction to Solid State Physics", 2nd. Edition, New York: Wiley (1956)
2. Ted R. Musgrave, "Understanding problems for chemical principles", Philadelphia: Saunders (1978)
3. W.B. Fowler, "Physics of Color Centers", New York: Academic Press (1968)
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