Aluminium & Magnesium Oxide / Spinell
1 Al2O3* 1 MgO or 3,5 Al2O3* 1 MgO

Crystal properties

Crystal growth method

CZ, Flame fusion (3,5 : 1)

 

 

Crystal growth orientation

(100), (110), (111)

 

2 inch diameter

Variations

Dopands on request

Crystallographic structure

Cubic: a = 8.10 Å

Mineralogical

Spinell

Twinning structure

domaine structure

Colour

Colourless

Density

3.61 g/cm3

Melting point

1950 °C

Hardness

8 (Mohs)

Dielectric constan

8 - 9

Dielectric loss tangent (10 GHz

ca. 3.0 * 10_5

Specific resistivity

ca. 1014 W/ cm

Dielectric loss tangent (10GHz).

3.0 * 10_5 
8.6 * 10_5

|| c-axis.
^ c-axis.

RT.
RT.

Dielectric constant

1016 W/cm

 

RT

Transmission range

0.2 to 6.0 mm

 

Refraction index

nd = 1.727

at 500 nm

Dispersion

0.012

 

Standard orientations

Orientation:
AluminiumMagnesiumOxid

(001), (111), (110)
Other orientations on request