MgO Monocrystal substrate

MgO monocrystal substrate

Magnesium Oxide (MgO) monocrystal substrates are known for their excellent thermal stability, high mechanical strength, and good dielectric properties. Their crystal structure offers effective lattice matching with various materials. These substrates are commonly used in epitaxial growth for thin films, particularly in the fabrication of high-temperature superconductors and oxide electronics. Additionally, MgO substrates are utilized in microwave and photonics applications due to their low dielectric loss and chemical resistance.

For inquiry, please give us the following information:

  1. Size with tolerance (Length / Width / Thickness )
  2. Orientation
  3. Polishing Side (SSP or DSP )
  4. Quantity

Typical properties

Crystal Structure Cubic a= 4.216 Å
Growth Method Special Arc Melting
Typical Purity > 99.95%
Density 3.58 g/cm3
Melt Point 2852 °C
Hardness 5.5 (Mohn)
Thermal Expansion 12.8 x (10-6/°C)
Dielectric Constant 9.8
Optical Transmission > 90% @ 200 ~ 400 nm > 98 % 500 ~ 1000 nm
Crystal Perfection
  • No visible inclusions and micro cracking
  • X-Ray rocking curve available
Orientation <100>、<110>、<111>±0.5º
Size Dia2” x 0.5mmm, 25 x 25 x 0.5mm, 15 x 15 x 0.5mm, 10 x 10 x 0.5mm, 10 x 5 x 0.5mm, 5 x 5 x 0.5mm
or customized size
Surface Polishing SSP or DSP
Surface Roughness Surface roughness (Ra):<=5A

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