Typical Specifications

Crystal Structure

Trigonal:  a= b= 7.190 A,  c=7.367 A,  alpha=beta  =90^o,  gama =120^o

Growth Method

Bridgman

Melting Point

1493  ^oC

Crystal Purity

> 99.9%

Crystal Growth Direction

< 0001 >

Density

5.936  g/cm³

Hardness

4.5 (Mohs)

Thermal Expansion

 11.9  x10^-6/ K // c       15.8  x10^-6/ K // a  

Thermal Conductivity

5.1   W / m.k @ 300K

Optical Transmission Range

 Up to 10.5 micron wavelength

h_o : 1.63      h_e: 1.597

Orientation

<0001>  +/- 0.5^o

Standard Boule

 10 ~ 50 mm diameter