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Hafnium (Hf) Evaporation Material, Pellets, 99.99%, 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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Hafnium (Hf) evaporation pellets require e-beam deposition with a water-cooled copper hearth and compatible liner materials. Deposition source geometry and process parameters must be matched to the material's melting point, density, and Z-ratio for successful film formation.
- Evaporation Source Compatibility: Use water-cooled copper e-beam hearth with compatible liner materials, including graphite, Al2O3, BN, or Ta.
- Process Parameter Utilization: Apply the material's melting point, density, and Z-ratio for accurate evaporation rate control and film thickness monitoring.
- Deposition Geometry Verification: Confirm the deposition source geometry and hearth dimensions match the pellet size range (3-6 mm) before loading.
How does the Z-ratio of 0.36 for hafnium pellets affect e-beam evaporation rate monitoring and film thickness control?
The Z-ratio of 0.36 is a material-specific acoustic impedance factor used in quartz crystal microbalance (QCM) monitoring to correct for the difference between the deposited film's acoustic properties and those of quartz. For hafnium, this value must be entered into the deposition controller to ensure accurate thickness and rate readings. The product specification directly provides this Z-ratio, reducing the need for empirical calibration and enabling precise process control for thin-film deposition.
What liner materials are compatible with hafnium evaporation pellets in a water-cooled copper e-beam hearth?
The product is compatible with graphite, alumina (Al2O3), boron nitride (BN), and tantalum (Ta) liners when used in a water-cooled copper e-beam hearth. Hafnium's high melting point of 2,227°C and its chemical reactivity require liner selection that prevents contamination and hearth damage. These specified liner materials provide thermal stability and chemical inertness to maintain film purity during e-beam evaporation.
What infrastructure is required to evaporate hafnium pellets given their melting point of 2,227°C?
Hafnium's melting point of 2,227°C requires an e-beam evaporation source capable of reaching and sustaining such temperatures without contamination. The product is specifically designed for water-cooled copper e-beam hearths, which prevent hearth melting while allowing localized heating. The high melting point also necessitates compatible liner materials (graphite, Al2O3, BN, or Ta) to withstand thermal stress and chemical interaction, ensuring stable evaporation and film reproducibility.
Hafnium (Hf) pellets, 99.99% purity, 3–6 mm size, for e-beam evaporation. Melting point 2227°C, density 13.31 g/cm³, Z-ratio 0.36. Requires water-cooled copper hearth or compatible liner; high-temperature process demands careful source matching and thickness calibration.
Positive
- High purity 99.99%: 99.99% purity minimizes contamination in deposited films, critical for high-reliability thin-film applications in semiconductor or optical coatings.
- Controlled pellet size 3–6 mm: Uniform pellet size ensures consistent loading density and reproducible evaporation rates in e-beam sources, reducing process variability.
Trade-offs
- High melting point 2227°C: Requires high-power e-beam evaporation systems capable of reaching and sustaining 2227°C; not compatible with thermal evaporation or low-temperature sources.
- Z-ratio 0.36 demands calibration: The low Z-ratio (0.36) relative to typical quartz crystal monitors may require custom tooling factor adjustments for accurate thickness monitoring during deposition.
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).
