LaAlO3 Substrate
Description
LaAlO3 single crystal is the most important industrialized, large-size high-temperature superconducting thin film substrate single crystal material. Its growth with the Czochralski method, 2 inches in diameter and larger single crystal and the substrate can be obtained It's suitable for the production of high temperature superconducting microwave electronic devices (such as long-distance communication in high-temperature superconducting microwave filters etc.)
Properties
| Crystal Structure |
M6（normal temperature） |
M3（>435℃） |
| Unit Cell Constant |
M6 a=5.357A c=13.22 A |
M3 a=3.821 A |
| Melting Point（℃） |
2080 |
|
| Density（g/cm3） |
6.52 |
|
| Hardness (Mho) |
6-6.5 |
|
| 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 |
Room temperature is not dissoluble in minerals, the temperature is greater than 150 ℃ in soluble h3po4 |
|
| Characteristics |
For microwave electron device |
|
| Growth Method |
Czochralski method |
|
| Size |
10x3，10x5，10x10，15x15，，20x15，20x20， |
|
|
Ф15,Ф20，Ф1″，Ф2″,Ф2.6″ |
||
| 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 |
100 clean bag，1000 exactly clean bag |
|
Low Dielectric Constant’s Advantage
Reduce signal distortion: In electronic circuits and communication systems, low dielectric constant helps minimize signal distortion. Dielectric materials can affect the propagation of electrical signals, causing signal loss and delay. Low-k materials reduce these effects, enabling more accurate signal transmission and improving overall system performance.
Improve insulation efficiency: Dielectric materials are often used as insulators to isolate conductive components and prevent leakage. Low dielectric constant materials provide effective insulation by minimizing energy lost to electrostatic coupling between adjacent conductors. This results in increased energy efficiency and reduced power consumption of the electrical system.
