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Hafnium (Hf) Evaporation Material, Pellets, 99.95%, 1-3 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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Hafnium pellets for e-beam evaporation require specific liner compatibility and process parameter matching to avoid contamination. The material's high melting point and Z-ratio impose constraints on source hardware and thickness monitoring during deposition.
- Evaporation Source Compatibility: Hafnium pellets must be evaporated using a water-cooled copper e-beam hearth with a compatible liner such as graphite, Al2O3, BN, or Ta.
- Melting Point Constraint: The high melting point of 2227°C requires a deposition system capable of sustained high-temperature operation without thermal degradation of components.
- Z-Ratio for Process Control: The Z-ratio of 0.36 must be programmed into the quartz crystal monitor for accurate thickness measurement during deposition.
- Process Matching Requirement: Deposition parameters including source hardware and process route must be matched to hafnium's material behavior, melting point, and target film requirements.
How does the Z-ratio of 0.36 affect the accuracy of thickness monitoring during e-beam evaporation of hafnium?
The Z-ratio of 0.36 for hafnium is used in quartz crystal microbalance (QCM) sensors to correct for acoustic impedance mismatch between the deposited material and the quartz crystal. A Z-ratio of 0.36 indicates a significant correction is required for accurate film thickness monitoring; deposition controllers typically apply this factor automatically to ensure correct thickness readout. This value is specific to hafnium and must be entered correctly in the deposition system for reliable process control.
Which crucible liner materials are compatible with e-beam evaporation of hafnium at its melting point of 2,227°C?
Hafnium evaporation material is preferably evaporated using a water-cooled copper e-beam hearth with compatible liners including graphite, Al2O3, BN, or Ta. These materials can withstand the high melting point of hafnium (2,227°C) without contaminating the melt. The choice of liner depends on the specific e-beam system design and the desired film purity.
What is the pellet size range for hafnium evaporation material and how does it affect source loading?
The hafnium evaporation material is supplied as pellets in the 1–3 mm size range. This pellet size is well-suited for standard e-beam evaporation hearths, allowing uniform feeding and consistent evaporation rates. The small pellet form factor minimizes splattering and ensures stable source-to-substrate flux during deposition.
This Hafnium evaporation material in pellet form (99.95% purity, 1-3 mm) is suited for e-beam deposition with defined melting point and density, but requires compatible hearth liners and careful process matching.
Positive
- High purity 99.95% for thin-film quality: The 99.95% purity specification supports standard and high-purity deposition requirements, enabling consistent film properties without additional purification steps.
- Defined pellet form and size range: The 1-3 mm pellet size facilitates controlled source loading and uniform evaporation in e-beam systems, with documented melting point (2,227°C), density (13.31 g/cm³), and Z-ratio (0.36) for process calibration.
Trade-offs
- High-temperature e-beam infrastructure required: The preferred evaporation method is e-beam, requiring a water-cooled copper hearth and compatible liner materials (graphite, Al2O3, BN, or Ta), adding capital and consumable costs.
- Procurement verification steps necessary: Buyers must confirm deposition source geometry, certificate requirements, and shipment conditions before ordering, introducing administrative overhead for lab deployment.
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).
