Magnesium oxide ( MgO )

Crystal properties

  Magnesium

Crystal growth method

Arc furnace

Crystal growth orientation

(100)

Maximum size

Up to 2 inch

Variations

Doped crystals (Fe, Ti, Ni,
Cr, V, Cu, Mn, Zn,Co)
Other dopands on request

Crystallographic properties

     

Crystallographic structure

Cubic
a = 4.212 Å

   

Twinning structure

Twinfree

   

Colour

Colourless

   

Physical properties

 

   

Density

3.585 g/cm3

   

Melting point

2780 +/- 20 °C

   

Thermal expansion coefficient

8 * 10-6 K-1

   

Hardness in Microvickers 500 g

orientation

 

(100) (110) (111)
910 990 980

Physical properties cont.

     

Dielectric constant

< 9.5

   

Dielectric loss tangent

3.3 * 10-7

 

 

Specific resistivity

> 1017Ohm/cm

 

 

Optical properties

     

Transmission range

0.2 to 8 µm

 

 

Refraction index

nc = 1.77197 - 1.72267

 

 

X-ray properties

     

Orientation

(100), (110), (111)    
  Other orientations on request