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).
Strontium titanate is one of the important perovskite solar cell materials, and perovskite is a material with good photoelectric properties. Therefore, the growth of perovskite on strontium titanate is a hot research topic in recent years.
CasCrysTech (CCT) provides high quality strontium titanate(SrTiO3) crystal upon customer's request.
使用/应用
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).
特点/优势
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.
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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
2°（Special requirements can reach within 1 °）
Package
Class 100 clean bag, Class 1000 super clean room
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Dimension
5x5mm、10×5mm、10×10mm、20×20mm,Dia25.4mm,Dia30mm,
Thickness
0.5mm、1.0mm
Dimension Tolerance <±0.1mm
Thickness Tolerance<±0.05mm