Elastic
constants cij (1011 dyn/cm2
or 1010 Pa):
| 20.18 |
5.56 |
7.49 |
0.83 |
0 |
0 |
| 5.56 |
20.18 |
7.49 |
-0.83 |
0 |
0 |
| 7.49 |
7.49 |
24.13 |
0 |
0 |
0 |
| 0.83 |
-0.83 |
0 |
5.95 |
0 |
0 |
| 0 |
0 |
0 |
0 |
5.95 |
0.83 |
| 0 |
0 |
0 |
0 |
0.83 |
7.28 |
Photoelastic constants
pij:
| 0.03 |
0.079 |
0.104 |
-0.071 |
0 |
0 |
| 0.079 |
0.03 |
0.104 |
0.071 |
0 |
0 |
| 0.172 |
0.172 |
0.078 |
0 |
0 |
0 |
| -0.152 |
0.152 |
0 |
0.22 |
0 |
0 |
| 0 |
0 |
0 |
0 |
0.22 |
-0.152 |
| 0 |
0 |
0 |
0 |
-0.071 |
-0.025 |
Sound velocity:
| direction |
polarization |
v
(105 cm/s) |
| [100] |
[100],
L |
6.549 |
| [010] |
[010],
L |
6.838 |
| [010] |
S |
4.4667 |
| [001] |
[001],
L |
7.331 |
| [001] |
[100],
S |
3.5885 |
| [010] |
[100],
S |
3.838 |
| [001] |
[001],
L |
7.271 |
| [100] |
[001],
S |
4.801 |
| [100] |
[010],
S |
4.0593 |
| [010] |
[010],
QL |
6.882 |
| [010] |
[100],
S |
3.962 |
| [010] |
[001],
QS |
4.494 |
| [001] |
[001]
L |
7.333 |
| [001] |
[001]
L |
7.22 |
| [010] |
[010]
L |
6.58 |
| [100] |
[100]
L |
6.57 |
| [001] |
[010]
S |
3.57 |
| [001] |
[100]
S |
3.57 |
| [001] |
[001]
L |
7.331 |
Acousto-optic figure
of merit:
| sound
dir. |
sound
pol. |
light
dir. |
light
pol. |
M
(10-18 s3/g) |
| [001] |
[001] |
|
[010] |
6.4 |
| [001] |
[001] |
|
[001] |
4.6 |
| [100] |
[100] |
|
[001] |
27.4 |
| [100] |
[100] |
|
[010] |
5.6 |
| [100] |
[100] |
|
[100] |
1.4 |
| [001] |
[010] |
|
[100] |
29.2 |
| [001] |
[010] |
|
[010] |
29.2 |
|
Refraction
indices:
| l
(mkm) |
nx |
ny |
nz |
| 0.42 |
2.4144 |
2.4144 |
2.3038 |
| 0.45 |
2.3814 |
2.3814 |
2.2765 |
| 0.5 |
2.3444 |
2.3444 |
2.2446 |
| 0.55 |
2.3188 |
2.3188 |
2.2241 |
| 0.6 |
2.3002 |
2.3002 |
2.2083 |
| 0.65 |
2.2862 |
2.2862 |
2.1964 |
| 0.7 |
2.2756 |
2.2756 |
2.19 |
| 0.8 |
2.2598 |
2.2598 |
2.1741 |
| 0.9 |
2.2487 |
2.2487 |
2.1647 |
| 1 |
2.2407 |
2.2407 |
2.158 |
| 1.2 |
2.2291 |
2.2291 |
2.1481 |
| 1.4 |
2.2208 |
2.2208 |
2.141 |
| 1.6 |
2.2139 |
2.2139 |
2.1351 |
| 1.8 |
2.2074 |
2.2074 |
2.1279 |
| 2 |
2.2015 |
2.2015 |
2.1244 |
| 2.2 |
2.1948 |
2.1948 |
2.1187 |
| 2.4 |
2.1882 |
2.1882 |
2.1138 |
| 2.6 |
2.1814 |
2.1814 |
2.108 |
| 2.8 |
2.1741 |
2.1741 |
2.102 |
| 3 |
2.1663 |
2.1663 |
2.0955 |
| 3.2 |
2.158 |
2.158 |
2.0886 |
| 3.4 |
2.1493 |
2.1493 |
2.0814 |
| 3.6 |
2.1398 |
2.1398 |
2.0735 |
| 3.8 |
2.1299 |
2.1299 |
2.0652 |
| 4 |
2.1193 |
2.1193 |
2.0564 |
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:
3m
Density: 4.628 g/cm3
Optical spectral range: 0.4 - 5 mkm |
