SrTiO3 Substrates
Lattice Match:
Lattice constant: 3.905Å, closely matching high Tc superconductive material YBCO (3.88 Å).
Facilitates the epitaxial growth of HTS and many oxide thin films.
Crystal Structure:
Twin-less crystal structure.
Excellent physical and mechanical properties for film growth.
High Tc Films Compatibility:
Suitable for various high Tc films such as YBCO, Bi-system, and La-system.
Wide Applications:
Used for special optical windows and high-quality sputtering targets.
Compatible with multiple film growth technologies.
Applications: High-Temperature Superconductors (HTS), Optical Windows, Sputtering Targets, etc.
Strontium Titanate (SrTiO3 or STO) single crystals are highly valued for their excellent lattice match with most materials having a Perovskite structure. This makes them ideal substrates for the epitaxial growth of high-temperature superconductors (HTS) and various oxide thin films.
Specifications:
| Main performance parameters | |
| Crystal structure | cube |
| Growth method | Flame method |
| Lattice constant | a=3.905Å |
| Melting point (°C) | 2080 |
| density | 5.175（g/cm3） |
| hardness | 6(MOHS) |
| Coefficient of Thermal Expansion (/°C) | 9.4×10-6 |
| Dielectric constant | 300 |
| Chemical stability | Does not dissolve in water |
| Tangent loss | ~5×10-4（300k） ~3×10-4（77k） |
| Color and appearance | Transparent (sometimes slightly brown depending on the annealed state) without luancrystals |
| size | 10×3m、10×5m、10×10mm、15×15mm、20×15mm
According to customer needs, special orientation and size of substrates can be customized |
| thickness | 0.5mm、1.0mm |
| polished | Single-sided or double-sided |
| Plane orientation accuracy | ±0.5° |
| Edge orientation accuracy | 2° (within 1° for special requirements) |
| orientation | <100>、<110>、<111> |
| wrap | Class 100 clean bag, Class 1000 clean room |
Key Features:
1.Lattice Match:
- Lattice constant: 3.905Å, closely matching high Tc superconductive material YBCO (3.88 Å).
- Facilitates the epitaxial growth of HTS and many oxide thin films.
2.Crystal Structure:
- Twin-less crystal structure.
- Excellent physical and mechanical properties for film growth.
3.High Tc Films Compatibility:
- Suitable for various high Tc films such as YBCO, Bi-system, and La-system.
4.Wide Applications:
- Used for special optical windows and high-quality sputtering targets.
- Compatible with multiple film growth technologies.
Applications:
1.High-Temperature Superconductors (HTS):
- Epitaxial growth of HTS films such as YBCO, Bi-system, and La-system.
- Excellent performance with Tc>90K and Jc> = 106A/cm².
2.Optical Windows:
- High-quality windows for specific optical applications.
3.Sputtering Targets:
- High-quality targets for various sputtering applications.
Kingwin Optics provides both standard and customized SrTiO3 (STO) wafers, ensuring high quality and performance for your advanced applications. Our expertise in crystal growth and substrate preparation guarantees that our SrTiO3 wafers will meet your specific needs for HTS, optical windows, and various film growth technologies.
