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Silver Fluoride
Crystal: AgF
Structure: NaCl
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Lattice formation energy: |
-9.51 eV. (theorical, Mayer and al.) (Ref.1) |
-9.45 eV. (experimental) (Ref.1) |
|
Lattice parameter: |
2.4675 Å (nn distance) |
Density: |
g/cm3 |
Stiffness constants: in 1011 dynes/cm2, at room temperature
c11:
c12:
c44:
Compressibility (in 1011 dynes/cm2):
Poisson ratio:
Debye temperature: K
Melting temperature: K
Phonon spectrum discussed by:
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: 2.8 eV. at ° K
Plasmon energy: eV.
Exciton energy:
4.63 eV. (Gamma) at 4.8K. (Ref.2) |
6.34 eV. (L) at 4.8K. (Ref.2) |
Band structure discussed by:
R.C. Birtcher, W. Deutsch, J.F. Wenkelden & A.B. Kunz, Valence band structure in Silver Fluoride, J.of Phys. C5, 562 (1972)
Static dielectric constant:
Optic dielectric constant: 2.99
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. A. Marchetti & G. L. Bottger, Optical absorption spectrum of AgF, Phys.Rev. B3, 2604 (1971)
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