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Magnesium Oxide Evaporation Materials

VD0714 Magnesium Oxide Evaporation Materials, MgO

Material Type： Magnesium Oxide
Symbol： MgO
Color/Appearance： White, Crystalline Solid
Purity：99.9% ~ 99.99%
Shape：Powder/ Granule/ Custom-made

Thin-Film Mat Engineering (TFM) is a reliable source for high-purity magnesium oxide (MgO) evaporation materials, along with a comprehensive selection of other evaporation materials. We provide MgO in both powder and granule formats, catering to your specific needs and simplifying your application process.

MSDS File

Introduction

Magnesium Oxide (MgO) evaporation materials are widely used for depositing high-quality insulating and optical thin films in vacuum environments. With excellent dielectric properties, high thermal stability, and good transparency across a broad spectral range, MgO is a preferred material in semiconductor devices, optical coatings, and advanced thin film research.

Detailed Description

MgO evaporation materials are typically supplied as pellets, granules, or sintered pieces designed for compatibility with various evaporation sources such as electron beam (e-beam) systems and high-temperature resistant crucibles. Due to its high melting point (~2852°C), MgO is most commonly deposited using e-beam evaporation or other high-energy techniques.

The material exhibits strong ionic bonding and a stable cubic crystal structure, resulting in excellent electrical insulation and chemical inertness. MgO thin films are known for their low dielectric loss and high breakdown strength, making them ideal for insulating layers in microelectronic devices.

In optical applications, MgO provides good transparency in the visible and infrared regions, along with a relatively low refractive index compared to many oxides. This makes it suitable for multilayer optical coatings, including anti-reflective and protective films.

Careful control of particle size, density, and purity is critical to achieving stable evaporation behavior and minimizing issues such as spitting or non-uniform deposition. High-density, high-purity MgO materials ensure consistent film quality and long-term performance.

Key features include:

  • High melting point and thermal stability for demanding deposition processes

  • Excellent dielectric properties for insulating applications

  • Good optical transparency and low absorption

  • Chemically stable and resistant to corrosion

  • Available in multiple forms for different evaporation systems

Applications

Magnesium Oxide evaporation materials are widely used in:

  • Optical coatings (anti-reflective layers, protective films)

  • Semiconductor devices (insulating and dielectric layers)

  • Thin film capacitors and electronic components

  • Plasma display panels and electronic substrates

  • Magnetic tunnel junctions (as insulating barriers)

  • Research and development in thin film materials

Technical Parameters

ParameterTypical Value / RangeImportance
Chemical FormulaMgODefines material composition
Purity99.9% – 99.99%Ensures film quality
FormPellets / Granules / PiecesMatches evaporation sources
Particle Size1 – 6 mm (typical)Stable evaporation behavior
Melting Point~2852°CSuitable for high-temperature processes
Density≥ 95% theoreticalImproves deposition uniformity
Deposition MethodE-beam evaporationPreferred for high melting materials

Comparison with Related Materials

MaterialKey AdvantageTypical Application
MgOExcellent insulation, thermal stabilityElectronics, optics
Al₂O₃High hardness, strong dielectricProtective coatings
SiO₂Low refractive indexOptical coatings
HfO₂High dielectric constantAdvanced electronics

FAQ

QuestionAnswer
What deposition method is recommended for MgO?Electron beam evaporation is preferred due to its high melting point.
Can MgO be used in optical coatings?Yes, it offers good transparency and is suitable for multilayer coatings.
What forms are available?Pellets, granules, and custom shapes are available.
Is high purity important?Yes, especially for semiconductor and optical applications.
Which industries use MgO most?Semiconductor, optics, electronics, and research industries.

Packaging

Our Magnesium Oxide Evaporation Materials are meticulously tagged and labeled externally to ensure efficient identification and maintain high standards of quality control. We take great care to prevent moisture absorption and contamination during storage and transportation, ensuring the materials arrive in optimal condition.

Conclusion

Magnesium Oxide (MgO) evaporation materials provide a reliable solution for producing high-performance dielectric and optical thin films. With excellent thermal stability, insulation properties, and versatile applications, MgO remains an essential material in modern thin film deposition technologies.

For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.

Ordering Table

Material Size Quantity Purity Part Number
Magnesium Oxide 3mm - 6mm Pieces 50 g 99.95% EVMMGO3-6MMB
Magnesium Oxide 3mm - 6mm Pieces 500 g 99.95% EVMMGO3-6MMT

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FAQ

  • They are high‐purity substances (e.g. metals, alloys, or compounds) used in thermal or electron‐beam evaporation processes to form thin films on substrates.

  • Typically, they’re processed into a form (often ingots, pellets, or wires) that can be efficiently vaporized. Preparation emphasizes high purity and controlled composition to ensure film quality.

  • Thermal evaporation and electron-beam (e-beam) evaporation are the two main techniques, where material is heated (or bombarded with electrons) until it vaporizes and then condenses on the substrate.

  • Thermal evaporation heats the material directly (often using a resistive heater), while e-beam evaporation uses a focused electron beam to locally heat and vaporize the source material—each method offering different control and energy efficiency.

  • Key parameters include source temperature, vacuum level, deposition rate, substrate temperature, and the distance between the source and the substrate. These factors influence film uniformity, adhesion, and microstructure.

  • Evaporation generally produces high-purity films with excellent control over thickness, and it is especially suitable for materials with relatively low melting points or high vapor pressures.

  • Challenges include issues with step coverage (due to line-of-sight deposition), shadowing effects on complex topographies, and possible re-evaporation of material from the substrate if temperature isn’t properly controlled.

  • Common evaporation materials include noble metals (e.g., gold, silver), semiconductors (e.g., silicon, germanium), metal oxides, and organic compounds—each chosen for its specific optical, electrical, or mechanical properties.

  • Selection depends on desired film properties (conductivity, optical transparency, adhesion), compatibility with the evaporation process, and the final device application (semiconductor, optical coating, etc.).

  • Optimizing substrate temperature, deposition rate, and chamber vacuum are critical for ensuring that the film adheres well and forms the intended microstructure without defects.

  • Troubleshooting may involve checking the source material’s purity, ensuring stable source temperature, verifying the vacuum level, adjusting the substrate’s position or temperature, and monitoring deposition rate fluctuations.

While evaporation tends to yield very high purity films with excellent thickness control, it is limited by its line-of-sight nature. In contrast, sputtering can deposit films more uniformly on complex surfaces and is more versatile for a broader range of materials.

 

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