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Gold (Au) Evaporation Material, Pellets, 99.999%, 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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Gold (Au) pellets for thermal or e-beam evaporation require deposition-source hardware matching. Compatibility with Mo/W/Ta boats or water-cooled e-beam hearths with graphite/alumina liners must be confirmed before use.
- Evaporation Source Compatibility: Select the appropriate boat material (Mo, W, or Ta) or e-beam hearth liner (graphite or alumina) based on the pellet size and evaporation method.
- Melting Point and Thermal Management: Operate at or above the melting point of 1,064 °C while ensuring the source material does not exceed its safe operating temperature.
- Purity and Contamination Control: Verify the certificate of analysis for 99.999% purity to prevent contamination of the deposited thin film.
- Z-Ratio and Thickness Monitoring: Set the Z-ratio of 0.381 in the deposition controller to achieve accurate film thickness measurements.
What is the significance of the Z-ratio value of 0.381 for gold pellets in e-beam evaporation thickness monitoring?
The Z-ratio of 0.381 is used to correct the quartz crystal monitor for acoustic impedance mismatch between gold and quartz, ensuring accurate film thickness measurement during e-beam deposition. This value is specific to gold and is essential for calibrating the deposition rate when using a QCM sensor.
Which boat and liner materials are compatible with 99.999% gold pellets during thermal evaporation to prevent contamination?
For thermal evaporation, gold pellets should be heated in molybdenum (Mo), tungsten (W), or tantalum (Ta) boats. For e-beam evaporation, a water-cooled copper hearth with a graphite or alumina liner is recommended. These materials minimize chemical reaction and contamination at the melting point of 1064°C.
How does the pellet form factor (3–6 mm) influence loading and evaporation uniformity for gold deposition?
The 3–6 mm pellet size allows consistent loading into boats or hearths without excessive void space, promoting uniform heat distribution and stable evaporation rates. The size range is optimized for common evaporation source geometries and helps prevent spitting or uneven melting.
This gold evaporation pellet material (99.999% purity, 3-6 mm pellets) is suitable for high-purity thin-film deposition in thermal and e-beam systems. The specified pellet size aids consistent source loading, while the high density and Z-ratio require careful process optimization for uniform film growth.
Positive
- Ultra-high purity 99.999%: The 99.999% purity minimizes contamination in deposited films, critical for semiconductor, photonics, and precision optical coatings.
- Consistent pellet size 3-6 mm: The defined pellet size range supports reproducible source loading and stable evaporation rates during thermal or e-beam deposition.
Trade-offs
- High density and Z-ratio: Gold's density of 19.32 g/cm³ and Z-ratio of 0.381 require careful e-beam power and sweep calibration to avoid spitting or uneven deposition.
- Source compatibility requirements: Evaporation requires Mo/W/Ta boats or water-cooled e-beam hearths with graphite/alumina liners; improper source selection can lead to wetting or contamination.
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).
