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Order MgO Wafers and Magnesium Oxide Substrates
UniversityWafer, Inc. supplies researchers worldwide with high-quality magnesium oxide (MgO) wafers and related substrates. Whether you are developing thin films, testing new photonic structures, or fabricating terahertz devices, we can help you quickly identify MgO wafers that match your technical and budget requirements.
Typical MgO Wafer Specifications We Can Provide
Below are examples of the MgO wafers that our clients commonly request. We can often deliver from stock or arrange custom growth when tighter tolerances are required:
- Diameters from small pieces and 10 mm squares up to 1–3 inch wafers
- Crystal orientation: (100), (110), (111) and others on request
- Single-side polished (SSP) or double-side polished (DSP)
- Standard thicknesses around 0.3 mm – 1.0 mm, with custom options available
- Low-roughness surfaces for epitaxial growth and advanced thin-film research
- MgO-doped lithium niobate (MgO:LiNbO₃) and LNOI structures
Custom MgO Wafers for Your Process
Many projects require non-standard sizes, special flats, or application-specific surface preparations. We work with researchers to:
- Match MgO orientation and thickness to their growth or bonding recipe
- Support PLD, MBE, ALD, sputtering, and other deposition methods
- Provide wafers compatible with high-temperature or high-vacuum environments
- Discuss surface finish and cleaning options suitable for sensitive devices
If you are exploring a new material system or scaling from test coupons to full wafers, we can help you move efficiently from prototype to repeatable production.
Comparing MgO to Other Substrates
When choosing between MgO and other substrates such as Sapphire, Quartz, Silicon, or LiNbO₃, researchers often consider lattice match, thermal expansion, optical transparency, and thermal conductivity. MgO is particularly attractive when you need:
- Good lattice matching to perovskite oxides and certain nitride or oxide films
- High thermal stability during high-temperature growth processes
- A robust substrate for THz, nonlinear optics, and high-power photonics
Small Quantities for Prototyping and Teaching Labs
UniversityWafer regularly supports small orders for proof-of-concept experiments, senior design projects, and teaching labs. If you only need a few MgO wafers, diced pieces, or a mix of sizes to evaluate, let us know. We can often combine standard stock with custom cutting to help you stay within budget while still meeting your technical goals.
Magnesium Oxide (MgO) Wafers for Advanced Research
Magnesium oxide (MgO) wafers are widely used as high-quality, single-crystal substrates for thin film deposition, photonics, electro-optic devices, and terahertz systems. Their excellent thermal conductivity, chemical stability, and perfect cubic perovskite structure make MgO substrates highly compatible with a wide range of films including GaN, YBCO, Fe-based superconductors, LiNbO₃, transition-metal oxides, and other functional materials.
Why Researchers Choose MgO Wafers
MgO provides an excellent lattice match to many epitaxial materials, enabling high-quality growth, reduced defect density, smoother thin-film interfaces, and improved device performance. Its high melting point, transparency across a wide optical window, and robustness under high-vacuum deposition conditions make MgO an ideal platform for both optical and electronic applications.
MgO-Doped Lithium Niobate (MgO:LiNbO₃) and LNOI
UniversityWafer, Inc. also supplies MgO-doped lithium niobate (MgO:LN) substrates and LNOI wafers used in electro-optic modulators, frequency converters, nonlinear optics, and terahertz generation. MgO doping increases optical damage resistance, reduces photorefractive effects, and enhances power handling, making it a preferred choice for high-intensity applications.
MgO Wafers for Thin Film Deposition
MgO substrates are frequently used for epitaxial growth using PLD, MBE, ALD, and sputtering. Their low lattice mismatch with materials such as GaN, ZnO, perovskite oxides, and high-temperature superconductors supports high-quality crystalline films with minimal strain.
This makes MgO wafers essential for research in correlated electron materials, oxide electronics, ferromagnetic thin films, and spintronics.
Terahertz (THz) Generation Applications
MgO-doped lithium niobate wafers are a key material in high-power THz emitters using tilted-pulse-front techniques. Researchers choose these substrates for their ability to handle high optical intensities and generate strong THz fields with high efficiency. UniversityWafer provides wafers suited for both prototyping and advanced system integration.
Electro-Optic Modulators and Integrated Photonics
Because of their stability, low absorption, and compatibility with lithium niobate, MgO substrates enable low-loss waveguides and integrated photonic devices. MgO-based thin films and MgO:LNOI are increasingly used in EO modulators, frequency comb generators, and nonlinear optical circuits.
Planarization and Nanofabrication
MgO wafers are commonly used for SOG (spin-on-glass) planarization, dielectric coatings, and surface engineering for nanoscale devices. Their atomically smooth surface and chemical resistance make them ideal for multilayer structures, micro- and nano-patterning, and device packaging.
MgO Wafer Inventory and Custom Options
UniversityWafer, Inc. stocks MgO wafers in multiple sizes and orientations, and we can source or fabricate custom specifications for specialized research applications. Common offerings include:
- Diameter: 10 mm, 20 mm, 1 inch, 2 inch, 3 inch (availability varies)
- Orientation: (100), (110), (111)
- Thickness: 0.3 mm – 1 mm standard; custom thicknesses available
- Grade: Single-side polished or double-side polished
- Surface roughness: Low roughness options for epitaxial deposition
- Custom doping: MgO-doped LiNbO₃ and LNOI wafers
Researchers may also request wafers with chamfers, edge rounding, special flat orientations, ultra-low-roughness surfaces for MBE, or special cleaning and packaging.
Applications Supported by Our MgO Substrates
UniversityWafer MgO wafers are used in research fields including:
- Optoelectronics and photonic integrated circuits
- Nonlinear optics and frequency conversion
- THz generation and time-domain spectroscopy
- High-temperature superconducting films
- Oxide electronics and perovskite materials
- Spintronics and magnetic thin films
- Quantum materials and correlated electron systems
- Advanced MBE/PLD/ALD thin film research
Contact Us for Pricing and Availability
Request a quote today for the MgO substrates that best fit your project. Our team will help you select the appropriate wafer size, orientation, surface finish, and grade for your research goals.