Alumina Thin Flim LaAlO3 Substrates
Lanthanum aluminate is an inorganic compound with the formula LaAlO3, often abbreviated as LAO. It is an optically transparent ceramic oxide with a distorted perovskite structure.
LaAlO3 is a high temperature superconducting single crystal substrate. It is a good substrate material for epitaxial growth of high temperature superconducting thin films and giant magnetic thin films. Its dielectric properties are suitable for low loss microwave and dielectric resonance applications.
Main Advantages:
Small dielectric constant; low dielectric loss;good lattice matching;small thermal expansion coefficient;good chemical stability;wide energy gap;large specific surface area;certain activity; good thermal stability
Main Properties:
| Major Parameters |
| Crystal structure |
M6(normal temperature) |
M3(>435℃) |
| Unit cell constant |
M6 a=5.357A c=13.22 A |
M3 a=3.821 A |
| Melt point(℃) |
2080 ℃ |
| Density |
6.52(g/cm3) |
| Hardness |
6-6.5(mohs) |
| Thermal expansion |
9.4x10-6/℃ |
| Dielectric constants |
ε=21 |
| Secant loss(10ghz) |
～3×10-4@300k,～0.6×10-4@77k |
| Color and appearance |
To anneal and conditions differ from brown to brownish |
| Chemical stability |
Insoluble in mineral acid at room temperature,soluble inH3PO4 at temperatures above 150 °C |
| Characteristics |
For microwave electron device |
| Growth method |
Czochralski method |
| Size |
Size upon request, the biggest diameter 3 inches |
| Ф15, Ф20, Ф1″, Ф2″, Ф2.6″, Ф3″ |
| Thickness |
0.5mm,1.0mm |
| Polishing |
Single or double |
| Crystal Orientation |
＜100＞ ＜110＞ ＜111＞ |
| redirection precision |
±0.5° |
| Redirection the edge: |
2°(special in 1°) |
| Angle of crystalline |
Special size and orientation are available upon request |
| Ra: |
≤5Å(5µm×5µm) |
| Pack |
Class 100 clean bag,class 1000 clean bag
|
Applications:
Electronic devices, catalysis, high temperature fuel cell, ceramics, sewage treatment, substrate materials
Our Company:
Anhui Crystro Crystal Materials Co., Ltd. is specialized in research and development of crystal science and technology, our
business scope mainly concentrated in high-tech crystal materials research and development, manufacture and multidisciplinary solutions. The service industries include: communications, aerospace, automobile, medical, beauty and other industries.
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