TiO₂ Wafer (Titanium Dioxide Substrate)
High-quality TiO₂ substrates for optical, photonic, and thin-film applications.
Description
🔷 Overview
Titanium Dioxide (TiO₂) wafers, typically in the rutile phase, are single-crystal substrates widely used in optical devices, photonics, and thin-film epitaxy.
Rutile TiO₂ exhibits an extremely high refractive index and strong birefringence, making it one of the most suitable materials for optical components such as polarizers, beam splitters, and isolators.
In addition, TiO₂ substrates offer excellent chemical stability, mechanical hardness, and thermal stability, ensuring reliable performance in demanding environments.
Due to these properties, TiO₂ wafers are widely used as substrates for oxide thin films, photonic devices, and advanced research applications.
🔷 Key Features
- High refractive index (n ≈ 2.5–2.8) for optical applications
- Strong birefringence for polarization optics
- Excellent chemical and thermal stability
- High hardness (Mohs ~7) for durability
- Suitable for epitaxial growth of oxide thin films
- High dielectric constant and optical performance
- Available in multiple orientations and polishing options
🔷 Specifications
| Product: | Single crystal titanium oxide (TiO2) wafer |
| Purity: | > 99.99% |
| Material property: | Phase: rutile |
| Crystal structure: tetragonal | |
| Lattice constant: a = 4.5936 Å, c = 2.9582 Å | |
| Density: 4.26 g/cm3 | |
| Melting point: 1840 °C | |
| Growth Method: | FZ |
| Dimension: |
• 5 × 5 × 0.5 mm • 10 × 10 × 0.5 mm • Other sizes customizable |
| Orientation: | <100> / <001> / <110> / <111> |
| Polishing: | Single side / double side epi-polished |
| Surface roughness: | < 0.5 nm |
🔷 Applications
- Optical components (polarizers, isolators, prisms)
- Photonic and optoelectronic devices
- Thin-film deposition and epitaxial growth
- Ferroelectric and oxide materials research
- Laser and optical systems
- Sensors and catalytic applications
🔷 Why Choose TiO₂
- Much higher refractive index than most oxide substrates
- Strong birefringence for polarization control
- Better chemical stability compared to many optical crystals
- Suitable for both optical and thin-film applications
- Excellent substrate for oxide epitaxy
🔷 Customization Options
We support customized TiO₂ wafers based on your requirements:
- Size and thickness
- Orientation (<100>, <110>, <001>)
- Polishing (SSP / DSP)
- Doped substrates (e.g., Nb-doped TiO₂)
- Research-grade or optical-grade substrates
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