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Lithium Oxide

Crystal: Li₂O

Structure: Fluorite

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Mechanical and structural properties:

Cohesive energy:	eV
Lattice parameter: nn distance:	1.59 or 1.55 Å
Density:	2.0 g/cm³ (theoretical)

Stiffness constants: in 10¹¹ dynes/cm², at room temperature

c₁₁:

c₁₂:

c₄₄:

Compressibility (in 10¹¹ dynes/cm²):

Poisson ratio:

Debye temperature: K

Melting temperature: ° C

Neel 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:

Electronic properties:

Band gap:

direct: eV.

indirect: eV.

Gap: eV.

First exciton: eV.

Band structure discussed by:

Static dielectric constant:

Optic dielectric constant: 2.70, based on CRC n=1.644

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)

Cation polarisation: Å^-3

Anion polarisation: Å^-3

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