Magnesium Aluminate
MgAl2O4
|
Chemical name
Magnesium Aluminate |
|
Mineral name
Spinell |
|
Chemical formula
MgAl2O4 |
|
Melting point [°C]
1950 |
|
Crystal system
cubic |
|
Unit cell
a [Å]:8.10 b [Å]:8.10 c [Å]:8.10 |
|
Molecular weight [g/mol]
142.27 |
|
Twinning
domaine structure |
|
Mohs hardness
8 |
|
Density [g/cm3]
3.64 |
|
Color
colourless |
|
Refractive Index
nd=1.727 (at 500 nm) |
|
Crystal growth method
Czochralski, flame fusion method (3.5 : 1) |
|
Crystal growth orientation
(100), (110), (111) |
|
Maximum size
2 inch in diameter |
|
Variations
dopands on request |
|
Dielectric constant
8 - 9 |
|
Dielectric loss tangent (10 GHz)
3.0*10^(-5) || c-axis RT; 8.6*10^(-5) ^c-axis RT |
|
Specific resistivity [W/cm]
10^16 |
|
Transmission range
0.2 - 6.0 mm |
|
Orientation
(001), (111), (110), other orientations on request |
|
Dispersion
0.012 |
