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Strontium titanate (SrTiO3)

Strontium titanate (SrTiO3)


Strontium titanate (SrTiO3) is one of the most widely used high temperature superconducting single crystal substrate. It matches well with the lattice of high temperature superconducting materials such as YBaCuO, has no twin structure, and it has good physical and mechanical properties. SrTiO3 is also the preferred single crystal material for high temperature superconducting junction technology (using bicrystalline substrate or step-shaped substrate) and substrate stepwise (oblique cutting and heat treatment at specific angles).

Physical Properties

Material SrTiO3
Structure Cubic
Lattice (A) a=3.905
Growth Method Vernuil
Hardness 6 (Mohns)
Melting point 2080
Density(g/cm3) 5.175 g/cm3
Thermal expansion 9.4 (x 10-6/)
Permittivity ε = 300
Loss tangent ~ 5 × 10 - 4 (300k) ~ 3 × 10 - 4 (77k)
Chemical stability Insoluble in water
Color and appearance Transparent (sometimes slightly brown depending on annealing)


Size 10x3, 10x5, 10x10, 15x15, 20x20,Dia 2''x 0.33 mm, Dia 2'' x 0.43 mm
Thickness 0.5 mm, 1.0 mm
Polished SSP or DSP
Orientation  <100>, <110>, <111>
Redirection precision ±0.5°
Redirection the edge 2°(special in 1°)
Angle of crystalline Special size and orientation are avaiable for request


100 clean bag, 1000 exactly clean room
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