Bulk modulus | (7.55+0.26x)·1011 dyn cm-2 |
Density | 5.32-1.56x g cm-3 |
Hardness on the Mohs scale | ~ 5 |
Cleavage plane | {110} |
Piezoelectric constant | e14= -0.16-0.065x C m-2 |
Bulk modulus (compressibility-1) | Bs= =(7.55+0.26x)·1011dyn/cm2 |
Anizotropy factor | A=0.55-0.01x |
Shear modulus | C'=(3.25-0.09x)·1011dyn/cm2 |
[100] Young's modulus | Yo=(8.53-0.18x)·1011dyn/cm2 |
[100] Poisson ratio | σo=(0.31+0.1x) |
Wave propagation Direction |
Wave character |
Expression for wave speed | Wave speed (in units of 105 cm/s) |
[100] | VL | (C11/ρ )1/2 | 4.73+0.68x+0.24x2 |
VT | (C44/ρ )1/2 | 3.34+0.46x+0.16x2 | |
[110] | Vl | [(C11+C12+2C44)/2ρ ]1/2 | 5.24+0.78x+0.24x2 |
Vt|| | Vt||=VT=(C44/ρ)1/2 | 3.34+0.46x+0.16x2 | |
Vt⊥ | [(C11-C12)/2ρ]1/2 | 2.47+0.33x+0.10x2 | |
[111] | Vl' | [(C11+2C12+4C44)/3ρ]1/2 | 5.40+0.79x+0.26x2 |
Vt' | [(C11-C12+C44)/3ρ]1/2 | 2.79+0.38x+0.12x2 |
Optical phonon energy as a function of x. The compositional dependence of the effective phonon energy <ωL0> and <ωT0> are shown by the dashed lines. (Adachi [1985]). |