Gallium Gadolinium Garnet (GGG)
Subsituted Gadolinium Gallium Garnet (SGGG)
 
 

Crystal properties

Crystal growth method

Czochralski

 

Crystal growth orientation

(100), (111)

 

Maximum size

3 inch diameter

 

Variations

Dopands on request

 

Crystallographic properties

Crystallographic structure

Cubic
a = 12.383 Å
a = 12.505 Å SGGG

Mineralogical

Garnet

Twinning structure

Perfect

Colour

Colourless / Brownish SGGG

Physical properties

Density

7.09 g/cm3

Melting point

1730 °C

Hardness

7.5 (Mohs)

Dielectric constant

30

Dielectric loss tangent (10 GHz)

ca. 3.0 * 10_4

Optical properties

Transmission range

0.3 to 7.0 mm

Refraction index:

nd = 1.9708 at 577 nm

n1.9567

nc 1.9577 at 625nm

n1.9567

nc 1.9500 at 2000nm

n1.9567

nc 1.9454 at 5000nm

X-ray properties

Orientation: (100), (111)