LaAlO3
LaAlO3 single crystal is a very important single crystal material for large-scale high-temperature superconducting thin film substrates. It has good lattice matching with a variety of perovskite structural materials, and is an excellent substrate material for epitaxial growth of high-temperature superconducting films and giant magnetoresistive filmsIt has low electrical constant and small microwave loss, and is suitable for making high-temperature superconducting microwave electronic devices (such as high-temperature superconducting microwave filters in remote communication).
| Performance and parameters | |
| Growth method | Czochralski method |
| Crystal Structure | Hexagonal (normal temperature) Cubic (> 435 ℃) |
| Lattice Constant | Hexagonal a = 5.357 Å, C = 13.22 Å Cubic a = 3.821 Å |
| Color and appearance | Depending on the annealing condition, the polished substrate has natural twin domains from brown to brown. |
| Chemical stability | It is insoluble in mineral acid at room temperature and soluble in phosphoric acid (H3PO4) when the temperature is higher than 150 ℃ |
| Density | 6.52 g/cm3 |
| Melting Point | 2080℃ |
| Mohs Hardness | 6.5mohs |
| Crystallographic Orientation | <100>、<110>、<111> |
| Redirection Precision | ±0.5° |
| Redirection the edge | ±1° |
Size | 10×10x0.5mm、10×5x0.5mm、5×5x0.5mm、15×15x0.5mm |
| Polishing | Single or double side |
| Surface Roughness | ＜5 Å |
| Packing | Class 1000 super clean room Class 100 super clean bag or single chip crystal box package |
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