Magnesium Fluoride (MgF₂) Sputtering Target, 99.99%
- Anti-Reflective Coatings: MgF₂ is widely used as a low-refractive-index material in anti-reflective coating systems designed to reduce reflection and improve optical transmission.
- UV Optical Coatings: Its broad transmission range makes magnesium fluoride particularly useful for ultraviolet optical components and coating systems.
- Laser Optics: MgF₂ thin films can be incorporated into optical coating stacks for laser windows, lenses, mirrors, and related optical components.
- Optical Filters: Magnesium fluoride can serve as a low-index layer in multilayer interference filters and other wavelength-selective optical coatings.
- Precision Optical Components: MgF₂ coatings are used on lenses, windows, prisms, and other precision optical components where controlled reflection and transmission are required.
- Research & Thin-Film Development: High-purity MgF₂ sputtering targets are also used by universities, laboratories, and R&D facilities for the development of fluoride thin films and advanced optical structures.
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Description
Magnesium Fluoride (MgF₂) Sputtering Target is a high-purity fluoride ceramic target designed for the deposition of magnesium fluoride thin films by physical vapor deposition (PVD), particularly RF magnetron sputtering.
MgF₂ is an important optical material known for its low refractive index, broad optical transparency, and excellent environmental stability. These characteristics make magnesium fluoride thin films particularly useful in anti-reflective coatings, optical filters, UV optical components, laser systems, and other applications where precise control of optical properties is required.
Tinsan Materials supplies 99.99% (4N) MgF₂ sputtering targets manufactured from carefully selected high-purity raw materials. Through controlled forming, sintering, precision machining, and quality inspection, our MgF₂ targets are produced to provide consistent composition, reliable sputtering performance, and uniform thin-film deposition.
Targets can be manufactured in standard circular or rectangular geometries as well as customized dimensions according to customer drawings. Backing plate bonding is also available for compatible sputtering systems.
Key Features
- High purity: 99.99% (4N)
- Low refractive index
- Broad optical transmission range
- Excellent optical properties
- Good chemical and environmental stability
- Controlled composition and microstructure
- Precision-machined dimensions
- Suitable for optical thin-film deposition
- Available in standard and custom sizes
- Backing plate bonding available
- Suitable for research and industrial coating applications
Chemical Composition & Purity
| Material | Magnesium Fluoride |
| Chemical Formula | MgF₂ |
| Purity | 99.99% (4N) |
| Target Type | Fluoride Ceramic Target |
| Appearance | White to Off-White |
| Custom Purity | Available upon request |
The purity of sputtering target materials can directly affect the composition and performance of deposited films. Our 4N MgF₂ targets are manufactured using high-purity raw materials with controlled metallic and other trace impurities.
A Certificate of Analysis (COA) can be provided upon request.
Material Properties
The following values represent typical properties of bulk magnesium fluoride and are provided for reference.
| Chemical Formula | MgF₂ |
| Molar Mass | 62.30 g/mol |
| Density | Approx. 3.15 g/cm³ |
| Melting Point | Approx. 1,260 °C |
| Boiling Point | Approx. 2,260 °C |
| Crystal Structure | Tetragonal |
| Refractive Index | Approx. 1.38 at 550 nm |
| Optical Transmission Range | Approx. 0.12–7.5 μm* |
| Electrical Property | Insulating |
| Solubility in Water | Very Low |
| Appearance | White / Off-White Solid |
*Optical transmission values generally refer to high-quality bulk MgF₂ material. Actual thin-film optical performance depends on film thickness, deposition conditions, substrate, microstructure, and post-deposition treatment.
Why Magnesium Fluoride for Optical Coatings?
Magnesium fluoride is one of the most established low-index materials used in optical coating technology.
Its combination of low refractive index and broad optical transparency makes MgF₂ particularly useful for reducing surface reflection and controlling the optical response of multilayer coating systems.
- Low Refractive Index: MgF₂ has a relatively low refractive index compared with many commonly used optical coating materials, making it useful as a low-index layer in multilayer optical designs.
- Broad Optical Transparency: High-quality MgF₂ exhibits transparency from the ultraviolet through the visible and into the infrared region, allowing its use in a wide variety of optical systems.
- Excellent Environmental Stability: MgF₂ provides good chemical and environmental durability, which is important for optical components exposed to changing operating conditions.
- Established Optical Coating Material: Magnesium fluoride has long been used in anti-reflection and optical coating systems and is suitable for applications ranging from laboratory optics to industrial optical components.
Available Specifications
Tinsan Materials provides both standard and custom MgF₂ sputtering targets.
1. Available Shapes
- Circular / Disc Targets
- Rectangular Targets
- Square Targets
- Custom Shapes
2. Typical Sizes
Common target diameters include:
- 1 inch
- 2 inches
- 3 inches
- 4 inches
- 6 inches
- Custom diameters
Thickness can be customized according to sputtering system requirements.
Please provide your target diameter, thickness, purity, quantity, backing plate requirements, and sputtering system information when requesting a quotation.
Target Bonding
Because ceramic sputtering targets can be relatively brittle compared with metallic targets, suitable target design and backing support can improve mechanical reliability during installation and operation.
MgF₂ targets can be supplied either as standalone targets or bonded to a backing plate, depending on target dimensions and sputtering equipment.
Available options may include:
- Copper backing plates
- Other compatible backing materials
- Indium bonding
- Customized bonding configurations
The appropriate bonding solution depends on target dimensions, operating power, cooling conditions, and sputtering system design.
Customers are encouraged to provide a target drawing or existing target specifications so that the appropriate configuration can be evaluated.
Applications
- Anti-Reflective Coatings: MgF₂ is widely used as a low-refractive-index material in anti-reflective coating systems designed to reduce reflection and improve optical transmission.
- UV Optical Coatings: Its broad transmission range makes magnesium fluoride particularly useful for ultraviolet optical components and coating systems.
- Laser Optics: MgF₂ thin films can be incorporated into optical coating stacks for laser windows, lenses, mirrors, and related optical components.
- Optical Filters: Magnesium fluoride can serve as a low-index layer in multilayer interference filters and other wavelength-selective optical coatings.
- Precision Optical Components: MgF₂ coatings are used on lenses, windows, prisms, and other precision optical components where controlled reflection and transmission are required.
- Research & Thin-Film Development: High-purity MgF₂ sputtering targets are also used by universities, laboratories, and R&D facilities for the development of fluoride thin films and advanced optical structures.
Frequently Asked Questions
Q: What is a Magnesium Fluoride sputtering target?
A: A Magnesium Fluoride sputtering target is a high-purity MgF₂ material used as the source material in PVD sputtering processes to deposit magnesium fluoride thin films onto substrates.
Q: What is the purity of your MgF₂ sputtering target?
A: Our standard high-purity MgF₂ sputtering target is available at 99.99% (4N) purity. Other purity requirements can be evaluated upon request.
Q: What color is a MgF₂ sputtering target?
A: MgF₂ sputtering targets generally have a white to off-white ceramic appearance. Actual appearance can vary slightly depending on material purity, density, manufacturing process, and surface finish.
Q: What are MgF₂ thin films used for?
A: MgF₂ films are widely used in anti-reflective coatings, UV optics, optical filters, laser optics, lenses, windows, and multilayer optical coatings.
Q: Is MgF₂ suitable for RF sputtering?
A: Yes. Because MgF₂ is an electrically insulating material, RF magnetron sputtering is commonly used for MgF₂ thin-film deposition.
Q: Can MgF₂ be sputtered using conventional DC sputtering?
A: Conventional DC sputtering is generally not preferred for insulating MgF₂ targets because charge can accumulate on the target surface. RF sputtering is normally the more appropriate method.
Q: Can you provide bonded MgF₂ sputtering targets?
A: es. Bonding to a suitable backing plate can be provided depending on the target size, configuration, and sputtering system requirements.
Q: Can you manufacture rectangular MgF₂ targets?
A: Yes. Round, square, rectangular, and other customized target geometries can be evaluated according to customer requirements.
Ordering & Technical Support
Tinsan Materials provides flexible minimum order quantities, competitive pricing, and worldwide delivery. For custom specifications or technical inquiries, please feel free to contact us for a detailed consultation or email us at info@nbsvip.com.
