SrTiO3 Substrate
Strontium Titanate or SrTiO3 single crystal provides a good lattice match to most materials with Perovskite structure. It is an excellent substrate for epitaxial growth of HTS and many oxide thin films. Its lattice constant (3.905Å) fits the common high Tc superconductive material YBCO (3.88 Å) very well. It has twin-less crystal structure and very good physical and mechanical properties for film growth. It is suitable for various high Tc films such as YBCO, Bi-system, La-system and others.
Features
1 ) Good lattice match to most materials with Perovskite structure
2 ) Twin-less crystal structure
3 ) Good physical and mechanical properties
Applications
1 ) High Tc films for YBCO
2 ) High Tc films for Bi-system
3 ) High Tc films for La-system
Specifications
Materials | SrTiO3 |
Orientation | [100] or [110] or [111] < ±0.5° |
Surface Finish | Single side polished (SSP) or Double sides polished (DSP) |
Polished Side Roughness | < 0.5 nm |
Typical Size | 10 x 5 x 0.5 mm, 10 x 10 x 0.5 mm etc. |
Dimension Tolerance | ±0.1 mm or better |
Thickness Tolerance | ±0.05 mm or better |
Maximum Size | Diameter 30 mm |
Properties
Chemical Formula | SrTiO3 |
Crystal Structure | M6 |
Lattice Parameters | a = 3.90 Å |
Melting Point | 2050 ℃ |
Density | 5.175 g/cm3 |
Hardness | 6 Mohs |
Thermal Expansion Coefficient(/ ℃) | 10.4 × 10^-6 |
Tangent Loss | ~5×10^-4 (300k) ~3×10^-4 (77k) |
Dielectric Constants | 300 |