Description
LaAlO 3 single crystal provides a good lattice match to many materials with perovskite structure. It is an excellent substrate for the epitaxial growth of high Tc superconductors and magnetic and ferroelectric thin films. The dielectric properties of LaAlO3 crystal are well-suitable for low-loss microwave and dielectric resonance applications.
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Typical Physical Properties |
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| Crystal Structure | Pseudo cubic a=3.792Å |
| Growth Method | Czochralski |
| Density | 6.52 g/cm3 |
| Melt Point | 2080 oC |
| Thermal expansion | 10 (x10-6/ oC) |
| Dielectric Constant | ~ 25 |
| Loss Tangent at 10 GHz | ~3x10-4 @ 300K , ~0.6 x10-4 @77K |
| Color and Appearance | Tan to Brown based on annealing condition Visible twins on polished substrate. |
| Chemical Stability | Insoluble in mineral acids at 25 oC and soluble in H3PO3 at> 150 oC |
| LaAlO3 | SrTiO3 | ||||
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