Bulk modulus | 4.7·1011 dyn cm-1 |
Density | 5.77 g cm-3 |
Surface microhardness (using Knoop's pyramid test) | 220 kg mm-2 |
Cleavage plane | {100}, {100} |
Piezoelectric constant | e14= -7·10-2 C m-2 |
Electron g - factor | -50.6 |
Temperature dependences of elastic constants. Circles - (Slutsky and Garland [1959]); Triangles - (Potter [1956]). |
Bulk modulus (compressibility-1) | Bs= 4.66·1011 dyn cm-2 |
Shear modulus | C'= 1.51·1011 dyn cm-2 |
[100] Young's modulus | Yo= 4.09·1011 dyn cm-2 |
[100] Poisson ratio | σo = 0.35 |
Wave propagation Direction | Wave character | Expression for wave speed | Wave speed (in units of 105 cm/s) |
[100] | VL | (C11/ρ)1/2 | 3.4 |
VT | (C44/ρ)1/2 | 2.29 | |
[100] | Vl | [(C11+Cl2+2C44)/2ρ]1/2 | 3.76 |
Vt|| | Vt||=VT=(C44/ρ)1/2 | 2.29 | |
Vt⊥ | [(C11-C12)/2ρ]1/2 | 1.62 | |
[111] | Vl' | [(C11+2C12+4C44)/3ρ]1/2 | 3.88 |
Vt' | [(C11-C12+C44)/3ρ]1/2 | 1.87 |
νLO(Γ) | 5.90 | νTO(X5) | 5.38 |
νTO(Γ) | 5.54 | νTA(L3) | 0.98 |
νTA(X5) | 1.12 | νLA(L1) | 3.81 |
νLA(X3) | 4.30 | νLO(L1) | 4.82 |
νLO(X1) | 4.75 | νTO(L3) | 5.31 |