SrTiO3

Strontium titanate(SrTiO3)is an insulating material, which can be transformed into ferroelectric materials or superconductors by chemical doping, pressure, strain or isotope substitution. 

It is one of the most widely used excellent high temperature superconducting single crystal substrates. It matches well the lattice of high temperature superconducting materials such as YBa2Cu3O7, twinning less structure and has excellent physical and mechanical properties. A variety of high-temperature superconducting thin films (Y-line, Bi-line, La-line, etc.) made using various membrane making techniques (such as magnetic sputtering, pulse laser deposition, laser molecular beam epitaxy, etc.) can obtain TCO 90 ° K, JCO 106A / cm2.SrTiO3 is also the preferred single crystal material for high temperature superconducting junction technology (using two-crystal substrate or step substrate) and substrate stepping (oblique cut at a specific angle).

CasCrysTech (CCT) provides high quality strontium titanate(SrTiO3) crystal upon customer's request.

Uses/Applications

A variety of high-temperature superconducting thin films (Y-line, Bi-line, La-line, etc.) made using various membrane making techniques (such as magnetic sputtering, pulse laser deposition, laser molecular beam epitaxy, etc.) can obtain TCO 90 ° K, JCO 106A / cm2.
SrTiO3 is also the preferred single crystal material for high temperature superconducting junction technology (using two-crystal substrate or step substrate) and substrate stepping (oblique cut at a specific angle).

Features/Benefits

Strstrontium titanate (SrTiO3)is an insulating material, which can be transformed into ferroelectric materials or superconductors by chemical doping, pressure, strain or isotope substitution.
It is one of the most widely used excellent high temperature superconducting single crystal substrates.
It matches well the lattice of high temperature superconducting materials such as YBa2Cu3O7, twinning less structure and has excellent physical and mechanical properties.

  • Crystal Structure

    Cubic

    Growth Method

    Verneuil's method, floating zone method

    Lattice Constant

    a=3.905Å

    Melting Point 

    2060℃

    Density

    5.122(g/cm3)

    Mohs Hardness

    6-6.5 (mohs)

    Thermal Expansion

    9.4×10-6/K

    Dielectric Constant

    ε=5.20

    Chemical Stability

    Insoluble in water

    Loss Tangent

    ~5×10-4(300k) ~3×10-4(77k)

    Color

    Transparent (sometimes slightly yellow according to the annealing state)

    Dimension

    5x5mm、10×5mm、10×10mm、20×20mm,Dia25.4mm,Dia30mm,

    According to customer needs, substrates with special orientation and size can be customized.

    Thickness

    0.5mm、1.0mm

    Dimension Tolerance

    <±0.1mm

    Thickness Tolerance

    <±0.05mm

    Polishing

    One side or two sides

    Orientation

    <100><110><111> 

    Orientation Tolerance

    ±0.5°

    Edge Orientation Accuracy

    Special requirements can reach within 1 °

    Package

    Class 100 clean bag, Class 1000 super clean room

  • Dimension

    5x5mm、10×5mm、10×10mm、20×20mm,Dia25.4mm,Dia30mm,


    Thickness

    0.5mm、1.0mm


    Dimension Tolerance <±0.1mm

    Thickness Tolerance<±0.05mm