SrTiO3 Single Crystal Wafers

Standard Format: Circular wafer — 1″ diameter (25.4 mm) × 0.5 mm.
Polish: Single-Side Polished (SSP) or Double-Side Polished (DSP).

Product Description:
Overview: High-purity Strontium Titanate (SrTiO3) single crystal wafers optimized for high-temperature superconductivity (HTS), magnetron sputtering, and pulsed laser deposition (PLD). These cubic perovskite crystals provide a stable foundation for the epitaxial growth of complex oxide thin films.

Technical Specifications:
– Crystal System: Cubic
– Growth Method: Flame Fusion (Verneuil Method) / Floating Zone Method
– Lattice Constant: a = 3.905 Angstrom
– Melting Point: 2060 °C
– Density: 5.122 g/cm^3
– Hardness: 6 – 6.5 Mohs
– Thermal Expansion Coefficient: 9.4 x 10^-6 / °C
– Dielectric Constant (ε): 5.20
– Chemical Stability: Insoluble in water
– Loss Tangent (Tangent Delta):
– ~ 5 x 10^-4 (300K)
– ~ 3 x 10^-4 (77K)
– Color & Appearance: Transparent (may have a slight brown tint depending on annealing state); Twin-free

Manufacturing Precision:
– Thickness (Standard): 0.5mm / 1.0mm
– Dimensional Tolerance: < ±0.1mm
– Thickness Tolerance: < ±0.015mm (Specialized request: < ±0.005mm)
– Polishing: Single-side or Double-side
– Crystal Face Orientation Accuracy: ±0.5°
– Edge Orientation Accuracy: 2° (Specialized request: < 1°)
– Available Orientations: <100>, <110>, <111>, etc.