Lanthanium Aluminate (LaAlO3)
Crystal properties | ||
Crystal growth method | Czochralski method | ![]() |
Crystal growth orientation | (100) | |
Maximum size | Type a) Up to Æ 3 inch |
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Crystallographic properties | ||
Structural typ | Distorted Perovskite | |
Crystallographic structure | Rhombohedral a= 5.357 Å ( x = 60°6') Perovskite (only for calculations) a = 3.863 Å ( x = 90°5') |
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Twinning structure | Orthogonal twin planes along (100) | |
Colour | Colourless to very light brown | |
Physical properties | ||
Density | 6.52 g/m3 | |
Melting poin | 2080 °C | |
Hardness | 5.9 (Mohs) | |
Thermal expansion coefficient | 1.0 * 10-5 K-1 | |
Dielectric constant | 25 | |
Dielectric loss tangent | 3* 10-4 at 300 °K 6 * 10-5 at 77 °K |
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X-ray properties | ||
Orientation | Type a) (100), (110), (111) |
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