MgAl2O4 Substrate
Description
Magnesium aluminate (MgAl2O4) single crystals are widely used in sonic and microwave devices and epitaxial MgAl2O4 substrates of III-V nitride devices. The MgAl2O4 crystal was previously difficult to grow because it is difficult to maintain its single crystal structure. But at present we have been able to provide high quality ang 2 inch diameter MgAl2O4 crystals.
Properties
| Crystal Structure |
Cubic |
| Lattice Constant |
a = 8.085Å |
| Melting Point（℃） |
2130 |
| Density（g/cm3） |
3.64 |
| Hardness (Mho) |
8 |
| Color |
White transparent |
| Propagation Loss (9GHz) |
6.5db/us |
| Crystal Orientation |
<100>, <110>, <111> Tolerance: + / -0.5 degrees |
| Size |
dia2 "x0.5mm, 10x10x0.5mm, 10x5x0.5mm |
| Polishing |
Single-sided polished or double-sided polished |
| Thermal Expansion Coefficient |
7.45 × 10 (-6) / ℃ |
MgAl2O4 Substrate Definition
MgAl2O4 substrate refers to a special type of substrate made of the compound magnesium aluminate (MgAl2O4). It is a ceramic material with several desirable properties for various applications.
MgAl2O4, also known as spinel, is a transparent hard material with high thermal stability, chemical resistance and mechanical strength. These properties make it suitable for use as a substrate in a variety of industries, including electronics, optics and aerospace.
In the field of electronics, MgAl2O4 substrates can be used as a platform for growing thin films and epitaxial layers of semiconductors or other electronic materials. This could enable the fabrication of electronic devices such as transistors, integrated circuits and sensors.
In optics, MgAl2O4 substrates can be used for the deposition of thin film coatings to improve the performance and durability of optical components such as lenses, filters and mirrors. The substrate's transparency across a wide range of wavelengths makes it particularly suitable for applications in the ultraviolet (UV), visible, and near-infrared (NIR) regions.
In the aerospace industry, MgAl2O4 substrates are used for their high thermal conductivity and thermal shock resistance. They are used as building blocks for electronic components, thermal protection systems and structural materials.
Overall, MgAl2O4 substrates have a combination of optical, thermal, and mechanical properties that make them useful in a variety of applications, including the electronics, optics, and aerospace industries.
