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Strontium Titanate Single Crystal
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. SrTiO3 is an excellent and wide applied High Tc superconductive single crystalline substrate. SrTiO3 single crystal has also been used widely for special optical windows and as high quality sputtering target. It is also suitable for different film growth technologies such as Magnet Sputtering, Pulsed Laser Deposition (PLD), Vaporization, MOCVD, CVD, and laser MBE etc. Films made by these materials and technologies on SrTiO3 substrate have excellent performance, for instance Tc>90K, Jc> = 106A/cm2.
Formula: SrTiO3
Growth Method: Flame Fusion Method
Growth Orientation: (100), (110), (111)
Structure: Cubic, a = 3.905 Å
Twinning Structure: Twin-Free
Color: Clear to Light Yellow
PROPERTIES:
Density: 5.12 gm/cc
Melting Point: 2080oC
Hardness: 6 - 6.5 Mohs
Thermal Expansion Coefficient: 10.4 x 10-6 K-1
Thermal Coefficient at 100oC: 120 Mw/cmoC
Dielectric Constant: 300
Dielectric Loss Tangent: 2 x 10-2
Specific Resistivity: > 10 Ohm cm
OPTICAL PROPERTIES:
Transmission Range: 0.935 - 6 microns
Refractive Index: nc = 2.380
nd = 2.409
nr = 2.488
SIZES AVAILABLE:
5 mm x 5 mm x 0.5 mm or 5 mm diameter
10 mm x 10 mm x 0.5 – 1.0 mm or 10 mm diameter
20 mm x 20 mm x 0.5 – 1.0 mm or 20 mm diameter
25 mm x 25 mm x 0.5 – 1.0 mm or 25 mm diameter