Purity

 99.99%

Color

Light Brown

Crystal Structure

Tetragonal

Lattice Constant

a = b = 3.756 A C = 12.636 A

Density

 5.92 g / cc

Melt Point

1650°C

Thermal Expansion Coeff.

12 ppm / °C

Dielectric Constant 

16.81 at a axis 20.02 at c axis

Properties/Crystal

SrTiO3

LaAlO3

SrLaAlO4

Structure

Cubic

Rhombohedral at 25°C
Cubic at > 435°C

Tetragonal

Lattice Constant

a=3.905

a=3.821 A

a=b=3.756 A c= 12.636

mismatch to YBCO (a=3.9)

+0.12%

-2.0%

-3.7%

Dielectric Constant

~300

~ 25 

~ 17

Grown Method

Verneuil

CZ

CZ

Thermal expansion

10.4 (x10^-6/ °C)

10 (x10^-6/ °C)

12 (x10^-6/ °C)

Melting point

2080

2080°C

1650°C

Density

5.175 g/cm³

6.52 g/cm³

5.92 g/cm³

Max. Crystal Size

30 mm dia.

75 mm dia

35 mm dia

Wide rocking curve due to dislocation density

Visible twin due to phase transition around 400°C

Narrow rocking curve, no twins, less defects

Higher

Lower

Medium

Other Crystal Wafer A-Z

Plasma Cleaner

 Wafer Containers

Dicing Saw

Film Coater