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Sodium Hydride

Crystal: NaH

Structure: NaCl

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Mechanical and structural properties:

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:

W. Dyck & H. Jex, Lattice Dynamics of Alkali Hydrides & Deuterides with the NaCl type Structure, J. Phys., C14. 4193 (1981)

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:

Electronic properties:

Band gap:

direct: eV. at K

indirect: eV. at ° K

Plasmon energy:

Exciton energy:

Band structure discussed by:

Static dielectric constant:

Optic dielectric constant:

Electron mobility:

Hole mobility:

Polaron coupling constant: a = ( for m*=1 )

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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