MgO Substrate

Magnesium oxide (MgO) single crystal substrates are widely used in many thin film technology fields. Such as the production of magnetic films, semiconductor films, optical films and high-temperature superconducting films. Because the dielectric constant and loss of MgO single crystal in the microwave band are very small, and large-area substrates (2 inches in diameter and larger) can be obtained, it is an important high-temperature superconducting thin-film single crystal substrate for the current industrialization. one. It can be used to make high-temperature superconducting microwave filters and other devices required by mobile communication equipment, and has a large realistic and potential application market.

OST Photonics offers high quality MgO substrates for researchers and industries. Crystal orientation, size and thickness can be customized according to your requirements.

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Features

  • Small dielectric constant and loss in the microwave band

  • High and low-temperature resistance

  • Good Corrosion resistance

  • Good thermal conductivity

  • Excellent optical properties

Applications

  • High-temperature superconducting microwave filters

  • Substrate material for the magnetic film, semiconductor films, optical films, and high-temperature superconducting films

Processing Capability

  • Orientation: <001>,<110>,<111>, etc.

  • Dimension: 1”, 2”, 5x5mm, 10x10mm, 20x20mm, 30x30mm, etc.

  • Thickness: 0.5mm, 1.0mm, etc.

  • Available items: wafers, substrates, blanks and customized optics

Specification and Properties of MgO Substrate

Crystal Structure

Cube

Growth Method

Special Arc Melting

Lattice Constant

a=4.130 Å

Melting Point

2800 ℃

Purity

>99.95%

Density

3.58 g/cm3

Hardness

5.5 Mohs

Thermal Expansion Coefficient

11.2×10^-6 /℃

Cleavage Plane

<100>

Optical Transmission

>90% (200~1000 nm)

Dielectric Constants

ε= 9.65

Thermal Conductivity

36 W/m.k @300K

Orientation

<001>,<110>,<111>, etc.

Orientation Tolerance

±0.5° or better

Dimension

1”, 2”, 5x5mm, 10x10mm, 20x20mm, 30x30mm, etc.

Dimension Tolerance

±0.1 mm or better

Thickness

0.5mm, 1.0mm, etc.

Thickness Tolerance

±0.05 mm or better

Surface Finish

Single-side polished (SSP)/Double sides polished (DSP)

Surface Roughness

Ra≤5Å (5µmx5µm)

Package

Class 100 clean bag, Class 1000 super clean room