|
Hafnium (Hf) Evaporation Material, Pellets, 99.95%, 3-6 mm
Product Type: Pure Metal Evaporation Material
Research-grade laboratory product
|
|||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||
|
LABORATORY PROCUREMENT SUPPORT
For material selection, deposition-source matching, pack-size confirmation or quotation support, contact our technical sales team.
INQUIRY: inquiry@atomfair.com
|
|||||||||||||||||||||||||||||||||||||||
|
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
|
This material requires use in a vacuum e-beam evaporation system with a water-cooled copper hearth and compatible liner materials such as graphite, alumina, BN, or tantalum. The product's melting point of 2,227°C and Z-ratio of 0.36 must be considered for process parameter matching to avoid film defects.
- Source Compatibility: Confirm compatibility with water-cooled copper e-beam hearth and appropriate liner materials before deposition.
- Process Matching: Evaporation source hardware and process parameters must be matched to the material's melting point, density, and Z-ratio to achieve desired film properties.
- Purity Verification: Verify the 99.95% purity specification against application requirements to prevent contamination of deposited films.
- Physical Form Consideration: Ensure the pellet size of 3-6 mm is appropriate for the source loading mechanism and evaporation rate control.
What is the melting point of hafnium (Hf) evaporation material and why is e-beam evaporation the preferred method?
Hafnium has a melting point of 2,227 °C, as stated in the technical specifications. Due to this high melting point, e-beam evaporation is the preferred method because it can generate sufficient localized heat to evaporate refractory metals. The product explicitly recommends using a water-cooled copper e-beam hearth with compatible liners such as graphite, Al2O3, BN, or Ta.
Which liner materials are compatible with the e-beam evaporation of hafnium pellets?
The product specifies that compatible liner materials for e-beam evaporation of hafnium include graphite, Al2O3, BN, and Ta. These materials are selected for their thermal stability and chemical inertness at the high melting point of hafnium (2,227 °C), ensuring minimal contamination and reliable deposition.
What is the significance of the Z-Ratio of 0.36 for hafnium in thin-film deposition?
The Z-Ratio of 0.36 is a material-specific acoustic impedance factor used in quartz crystal microbalance (QCM) monitoring to correct thickness readings during deposition. Because hafnium's Z-Ratio differs from the gold reference, the tooling factor in the QCM controller must be adjusted to achieve accurate film thickness measurements. This value is provided in the product specifications.
Hafnium (Hf) pellets at 99.95% purity and 3–6 mm size are evaluated for e-beam evaporation. The high melting point and low Z-ratio demand specific source hardware and deposition control for reliable thin-film fabrication.
Positive
- High purity 99.95%: 99.95% purity minimizes impurity incorporation in thin films, supporting high-quality optical and electronic coatings.
- Optimized pellet form factor: Pellets 3–6 mm size facilitate uniform evaporation source loading and controlled deposition rate in e-beam systems.
Trade-offs
- High melting point requirement: Melting point of 2,227°C requires high-power e-beam sources and water-cooled hearths; not suitable for thermal evaporation without specialized equipment.
- Low Z-ratio for thickness control: Z-ratio of 0.36 requires careful process monitoring for accurate thickness control in quartz crystal microbalance feedback systems.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
