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Magnesium Oxide (MgO)

♦ Magnesium Oxide (MgO) Data Sheet  ♦  Magnesium Oxide (MgO) MSDS

Magnesium Oxide can be used for high temperature windows and substrates. HTSC substrates.

Transmission Range :0.3 to 6 μm
Refractive Index :1.7085 at 2 μm (1)
Reflection Loss :12.8% at 2 μm (2 surfaces)
Absorption Coefficient :0.05 cm-1 at 5.5 μm
Reststrahlen Peak :n/a
dn/dT :+19 x 10-6 /°C
dn/dμ = 0 :n/a
Density :3.58 g/cc
Melting Point :2800 °C
Thermal Conductivity :42 W m-1 K-1 at 273K
Thermal Expansion :10.8 x 10-6 /°C at 273K
Hardness :Knoop 692 with 600g indenter
Specific Heat Capacity :877 J Kg-1 K-1
Dielectric Constant :9.65 at 1 MHz
Youngs Modulus (E) :249 GPa
Shear Modulus (G) :155 GPa
Bulk Modulus (K) :155 GPa
Elastic Coefficients :C11=294; C12=93; C44=155
Apparent Elastic Limit :138 MPA (20,000 psi)
Poisson Ratio :0.18
Solubility :0.00062g/100g Water
Molecular Weight :40.32
Class/Structure :Cubic FCC, NaCl, Fm3m, (100) cleavage

To download this data or our MSDS safety data sheet as a pdf, please click on the links at the top of the page.  To expand the transmission graphs, please click on the image.
µm   Noµm   Noµm   No
0.171   2.3190.180   2.1380.191   2.039
0.200   1.9860.230   1.8920.276   1.824
0.310   1.7950.382   1.76680.436   1.75471
0.50   1.7540.644   1.7341.00   1.7229
2.00   1.70853.00   1.69154.00   1.6679
5.00   1.63736.02   1.59577.04   1.543
8.07   1.4759.09   1.38910.64   1.209

Magnesium Oxide is grown in relatively small sizes, mainly in Japan and China.

REFERENCES:
(1) Handbook of Optical constants of Solids II ISBN 0-12-544422-2