measured on (100) plane along the <100> direction vs. concentration y for the undoped lattice-matched to InP.
Watts and Willoughby (1984)
| Bulk modulus | (7.1-0.516y+0.02y2)·1011 dyn cm-2 | Ga0.47In0.53AsyP1-y; 300K |
| Density | 4.81+0.552y+0.138y2 g cm-3 |
| C11 | (10.11 - 0.12y)·1011 dyn cm-2 | Adachi (1992) |
| C12 | (5.61 - 0.68y)·1011 dyn cm-2 | |
| C44 | (4.56 + 0.33y) ·1011 dyn cm-2 |
| Bulk modulus (compressibility-1) | ||
| Bs=(C11+2C12)/3 | Bs = (7.11-0.516y+0.02y2)·1011 dyn/cm2 | Adachi (1992) |
| Anisotropy factor | ||
| C'=(C11-C12)/2 | A = (0.493+0.035y-0.01y2) | |
| Shear modulus | ||
| C'=(C11-C12)/2 | C' = (2.25+0.28y)·1011 dyn/cm2 | |
| [100] Young's modulus | ||
| Yo=(C11+2C12)·(C11-C12)/(C11+C12) | Yo= (6.106+0.976y-0.344y2))·1011 dyn/cm2 | |
| [100] Poisson ratio | ||
| σo=C12/(C11+C12) | σo = (0.357-0.033y+0.006y2) |
|
GaxIn1-xAsyP1-y. Surface
microhardness (using Knoop's pyramid test) measured on (100) plane along the <100> direction vs. concentration y for the undoped lattice-matched to InP. Watts and Willoughby (1984) |
| Wave propagation Direction |
Wave character | Expression for wave speed | Wave speed (in units of 105 cm/s) |
| [100] | VL (longitudinal) | (C11/&rho)1/2 |
4.594-0.334y
|
| VT (transverse) | (C44/&rho)1/2 |
3.085-0.104y
|
|
| [100] | Vl | [(C11+Cl2+2C44)/2&rho]1/2 |
5.092+0.355y
|
| Vt|| | Vt||=VT=(C44/ρ)1/2 |
3.085+0.104y
|
|
Vt |
[(C11-C12)/2&rho]1/2 |
2.167+0.023y
|
|
| [111] | Vl' | [(C11+2C12+4C44)/3&rho]1/2 |
5.247+0.362y
|
| Vt' | [(C11-C12+C44)/3&rho]1/2 |
2.511+0.056y
|
 |
GaxIn1-xAsyP1-y lattice-matched
to InP. Longitudinal optical phonon frequencie (LO) vs. composition y. Adachi (1992) |
 |
GaxIn1-xAsyP1-y lattice-matched
to InP. Transverse optical phonon frequencie (TO) vs. composition y. The solid curves represent the calculated results using the modifed REI model. Adachi (1992) |
|
|