SrTiO
3 is an excellent and wide applied High Tc superconductive
single crystalline substrate. 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. It is also suitable for different film growth technologies such as
Magnet Sputtering, Pulsed Laser Deposition (PLD), Vapourization, MOCVD, CVD, and
laser MBE etc. Films made by these materials and technologies on SrTiO3
substrate have excellent performance, for instance Tc > 90K, Jc> = 10
6A/cm
2.
Crystal structure |
Cubic m3m
Peroviskite |
Cell parameter |
a=3.905 |
Melting point |
2353°C |
Density |
5.122g/cm3 |
Specific Heat |
0.544J/g∙k(300°K) |
Thermal
conductivity |
11.2W/m∙k |
Hardness (Mohs) |
6-6.5 |
Thermal expansion |
9.4x10-6K-1 |
Growth Method |
Flame |
Standard Size: Ф25, 20x20, 10x10, 10x5, 10x3mm,or customer
design.
Thickness: 0.5mm, 1.0mm.
Thickness tolerance: ±0.02mm Or ±0.005mm for special order.
Polish: one or two sides.
Orientation: <100> <110> <111>.
Orientation accuracy: ±0.5°
Edge Orientation accuracy: 2°(or 1°for special order)
Cut with special tilt angle: available(tilt angle:1°-45°)
Micro roughness Ra: ≤5Å(5μm×5μm)