 |
Transmission Range
|
0.18 ... 3.6 µm
|
Refractive Index
|
no= 1.6775, ne= 1.6899 @ 185 nm no= 1.5709, ne= 1.5809 @ 325 nm no= 1.5482, ne= 1.5575 @ 508 nm no= 1.5423, ne= 1.5513 @ 644 nm no= 1.5201, ne= 1.5282 @ 2.05 µm no= 1.4995, ne= 1.5070 @ 3.00 µm
|
dn / dT
|
–6.5 ×10–7 / K || Y, –5.5 ×10–7 / K _|_ Y
|
Density
|
2.648 g/cm3
|
Melting Point
|
1700 °C
|
Molecular Weight
|
60.08
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Thermal Conductivity
|
1.4 W/(m K)
|
Specific Heat
|
787 J/(kg K) @ 25 °C
|
Thermal Expansion
|
5 ×10–7
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Hardness (Knoop)
|
461 @ 200 g, 741 @ 500 g indenter load
|
Young's Modulus
|
76.5 GPa _|_ Y , 97.2 GPa || Y
|
Shear Modulus
|
36.4 GPa / 57,13 GPa
|
Bulk Modulus
|
98.98 GPa
|
Elastic Coefficient
|
C11 = 86.75 / C12 = 6.87 / C13 = 11.3 / C33 = 106.8 / C44 = 57.86 GPa
|
Dielectric Constant
|
3.9 / 4.34
|
Solubility in Water
|
insoluble
|
Crystal Structure
|
single crystal
|
Cleavage Planes
|
none
|
AT cut = + 35o from Z towards Y
|
BT cut = - 49o from Z towards Y
|
CT cut = + 38o from Z towards Y
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DT cut = - 52o from Z towards Y
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ET cut = - 66o from Z towards Y
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FT cut = - 57o from Z towards Y
|