| Material | Fe:SrTiO3 | Size(mm) | 10×3, 10×5, 10×10, 15×15, 20×15 |
| Thickness | 0.5mm, 1.0mm | Size Tolerance | <±0.1mm |
| Thickness Tolerance | <±0.015mm (special requirement can reach <±0.005mm) | Polishing | Single or Double surface polished (SSP or DSP) |
| Orientations | <100>, <110>, <111> | Redirection Precision | ±0.5° |
| Redirection the Edge | 2°(special in 1°) |
Basic Properties:
| Crystal Structure | Cubic | Growth Method | Flame Method |
| Lattice Constant | a=3.905Å | Fe Concentration(%) | 0.05%, 0.04% |
| Melt Point(℃) | 2080 | Density(g/cm3) | 5.122 |
| Hardness(mohs) | 6-6.5 | Dielectric Constants | ε=5.20 |
| Chemical Stability | Insoluble in Water | Coefficient of Thermal Expansion(/℃) | 9.4×10-6 |
| Thermal Expansion Coefficient | 10.4×10-6/k | Loss Tangent | ~5×10-4(300k) ~3×10-4(77k) |
Iron Doped Strontium Titanate Crystal Substrate (Fe:STO) is manufactured through adding small amounts of Iron into the SrTiO3 lattice. The dielectric and magnetic properties from the iron dopants grant Fe-doped SrTiO3 crystal substrate usage in field-effect transistors (FETs), HEMTs, MRAM, and magnetic field sensors. Shanghai North Optics provides Fe:SrTiO3 substrates with 0.05%, and 0.04% iron doping concentrations.
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