Elastic
constants cij (1011 dyn/cm2
or 1010 Pa):
| 86.81 |
7.09 |
11.95 |
18.01 |
0 |
0 |
| 7.09 |
86.81 |
11.95 |
-18.01 |
0 |
0 |
| 11.95 |
11.95 |
106.1 |
0 |
0 |
0 |
| 18.01 |
-18.01 |
0 |
58.17 |
0 |
0 |
| 0 |
0 |
0 |
0 |
58.17 |
18.01 |
| 0 |
0 |
0 |
0 |
18.01 |
39.86 |
Photoelastic constants
pij:
| 0.133 |
0.25 |
0.259 |
-0.029 |
0 |
0 |
| 0.25 |
0.133 |
0.259 |
0.029 |
0 |
0 |
| 0.258 |
0.258 |
0.0977 |
0 |
0 |
0 |
| -0.042 |
0.042 |
0 |
-0.0685 |
0 |
0 |
| 0 |
0 |
0 |
0 |
-0.0685 |
-0.042 |
| 0 |
0 |
0 |
0 |
-0.029 |
-0.0585 |
Sound velocity:
| direction |
polarization |
v
(105 cm/s) |
| [100] |
L |
5.75 |
| [100] |
S |
5.1 |
| [100] |
S |
3.36 |
| [010] |
QL |
6.01 |
| [010] |
[100],
S |
3.92 |
| [010] |
QS |
4.35 |
| [001] |
L |
6.32 |
| [001] |
S |
4.68 |
Acousto-optic figure
of merit:
| sound
dir. |
sound
pol. |
light
dir. |
light
pol. |
M
(10-18 s3/g) |
| [001] |
[001] |
|
[010] |
1.48 |
| [100] |
[100] |
|
[001] |
2.38 |
|
Refraction indices:
| l (mkm) |
nx |
ny |
nz |
| 0.185 |
1.6758 |
1.6758 |
1.68 |
| 0.194 |
1.66 |
1.66 |
1.6734 |
| 0.204 |
1.6429 |
1.6429 |
1.6556 |
| 0.25 |
1.6 |
1.6 |
1.6114 |
| 0.303 |
1.577 |
1.577 |
1.5872 |
| 0.359 |
1.5639 |
1.5639 |
1.5737 |
| 0.405 |
1.5572 |
1.5572 |
1.5667 |
| 0.468 |
1.551 |
1.551 |
1.5604 |
| 0.509 |
1.5482 |
1.5482 |
1.5575 |
| 0.546 |
1.5462 |
1.5462 |
1.5554 |
| 0.628 |
1.5428 |
1.5428 |
1.5519 |
| 0.707 |
1.5405 |
1.5405 |
1.5495 |
| 0.845 |
1.5375 |
1.5375 |
1.5464 |
| 1 |
1.535 |
1.535 |
1.5438 |
| 1.083 |
1.5339 |
1.5339 |
1.5426 |
| 1.2 |
1.5323 |
1.5323 |
1.541 |
| 1.3 |
1.531 |
1.531 |
1.5396 |
| 1.4 |
1.5297 |
1.5297 |
1.5383 |
| 1.6 |
1.527 |
1.527 |
1.5355 |
| 1.8 |
1.5241 |
1.5241 |
1.5324 |
| 2.058 |
1.52 |
1.52 |
1.5281 |
| 2.5 |
1.5116 |
1.5116 |
1.5195 |
| 3 |
1.4996 |
1.4996 |
1.507 |
NOTE: It
should be taken into account that nx=ny=nz=n
for optically isotropic material and nx=ny=no
and nz=ne
for uniaxial crystal. |
Crystal symmetry:
32
Density: 2.65 g/cm3
Optical spectral range: 0.15 - 4.5 mkm |
