Crystal properties
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