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Hafnium (Hf) Evaporation Material, Pellets, 99.9%, 3-6 mm
Product Type: Pure Metal Evaporation Material
Research-grade laboratory product
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LABORATORY PROCUREMENT SUPPORT
For material selection, deposition-source matching, pack-size confirmation or quotation support, contact our technical sales team.
INQUIRY: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This hafnium evaporation material is used in e-beam deposition under high vacuum. It requires compatibility with specific hearth liners and calibration of deposition parameters based on its melting point and Z-ratio.
- Evaporation Source Requirement: Use a water-cooled copper e-beam hearth with a compatible liner of graphite, Al2O3, BN, or Ta for hafnium evaporation.
- Temperature Parameter: The evaporation process must achieve a temperature of at least 2227°C, the melting point of hafnium, using e-beam heating.
- Z-Ratio Setting: Set the deposition controller to a Z-ratio of 0.36 for accurate film thickness measurement during evaporation.
- Pellet Size Compatibility: Ensure the pellet size of 3-6 mm is compatible with the source hearth geometry and feeding mechanism.
What is the significance of the Z-ratio of 0.36 for hafnium in e-beam evaporation?
The Z-ratio of 0.36 is a material-specific acoustic impedance parameter used in quartz crystal microbalance (QCM) monitoring to correct for the mismatch between the deposited hafnium film and the sensor crystal. This value is essential for accurate real-time thickness and deposition rate control during e-beam evaporation of these pellets.
Which liner materials are compatible with e-beam evaporation of hafnium pellets?
Compatible liner materials for e-beam evaporation of hafnium include water-cooled copper hearth, graphite, Al2O3, BN, and Ta. These materials are specified to withstand the high melting point of 2,227°C and minimize contamination during deposition.
How does the melting point of 2,227°C affect the evaporation process for these hafnium pellets?
The melting point of 2,227°C requires high-energy e-beam evaporation to achieve sufficient vapor pressure. The density of 13.31 g/cm³ influences source loading and evaporation rate, while the Z-ratio of 0.36 must be used for accurate thickness monitoring, making process parameter selection critical for reproducible film deposition.
Hafnium (Hf) evaporation pellets (99.9%, 3-6 mm) are suitable for E-beam thin-film deposition with a melting point of 2,227°C, density of 13.31 g/cm³, and Z-ratio of 0.36, requiring water-cooled copper e-beam hearth or compatible liner.
Positive
- 99.9% purity for reproducible films: The specified 99.9% purity enables direct comparison with standard and high-purity grades, providing a defined baseline for consistent thin-film stoichiometry in research deposition.
- Controlled pellet size 3–6 mm: The pellet form with a 3–6 mm size range supports uniform source loading and stable evaporation rates in E-beam systems, reducing the risk of particle bridging or feed irregularity.
Trade-offs
- Requires compatible e-beam hearth and liner: Deposition hardware must include a water-cooled copper e-beam hearth or a compatible graphite/Al2O3/BN/Ta liner; incompatible setups may cause thermal damage or contamination.
- High melting point demands high energy input: With a melting point of 2,227°C, achieving evaporation requires substantial power and careful thermal management, increasing operational complexity and cooling demands.
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).
