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Bismuth (Bi) Evaporation Material, Pieces, 99.99%, 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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Bismuth evaporation material requires thermal/resistive or low-power e-beam deposition using Mo/W/Ta boat or graphite/alumina crucible. The 1-3 mm pieces must be loaded in a source compatible with the material's melting point (271°C) and density (9.8 g/cm³) for controlled thin-film deposition.
- Evaporation Source Compatibility: Use only Mo/W/Ta boat or graphite/alumina crucible to avoid contamination during deposition.
- Deposition Rate Calibration: Account for Z-ratio of 0.79 when using quartz crystal monitor for thickness control to ensure accurate film thickness.
- Particle Size Handling: The 1-3 mm pieces are suitable for standard source loading; avoid using finer powders to prevent source spitting.
- Thermal Management: Maintain source temperature below 271°C melting point for controlled evaporation; avoid overheating to prevent material degradation.
- Purity Verification: Confirm 99.99% purity via certificate of analysis to ensure film quality consistency.
Why is the Z-ratio of 0.79 important for bismuth evaporation in thin-film deposition?
The Z-ratio of 0.79 is a material-specific acoustic impedance factor used to calibrate quartz crystal microbalance (QCM) monitors during bismuth evaporation. Accurate film thickness monitoring and deposition rate control depend on this value. The listed Z-ratio of 0.79 for bismuth (Bi) at 99.99% purity ensures precise feedback for thermal or e-beam evaporation processes.
What crucible or boat materials are recommended for bismuth evaporation, and why?
Molybdenum (Mo), tungsten (W), or tantalum (Ta) boats, as well as graphite or alumina crucibles, are recommended for bismuth evaporation. These materials are chemically compatible with molten bismuth at its melting point of 271°C and resist contamination during thermal/resistive evaporation. The source explicitly states that thermal/resistive evaporation is preferred, with low-power e-beam as an optional method using the same boat or crucible materials.
How does the 1-3 mm piece size of bismuth evaporation material affect deposition performance?
The 1-3 mm piece size is specified to support efficient source loading and controlled evaporation. The defined particle size range allows dense packing in Mo/W/Ta boats or graphite/alumina crucibles, reducing void formation and minimizing spitting or splashing during heating. This size range is directly matched to the evaporation method (thermal/resistive preferred, low-power e-beam optional) and ensures consistent melt surface area for stable deposition rates.
Bismuth (Bi) evaporation material, 99.99% purity, supplied as 1-3 mm pieces for thermal or low-power e-beam deposition. The low melting point (271°C) and high density (9.8 g/cm³) require careful source matching and rate calibration, while the available pack sizes (100g–1kg) support flexible lab deployment.
Positive
- High-purity 99.99% specification: Defined 99.99% purity enables consistent film stoichiometry and reduces contamination risk in vacuum thin-film deposition.
- Multiple pack sizes available: Offered in 100g, 500g, and 1kg packs, allowing buyers to match material quantity to experimental scale without over-procurement.
Trade-offs
- Low melting point (271°C): Bismuth's low melting point limits process compatibility; thermal evaporation is preferred, and low-power e-beam is optional but may require careful power control to avoid splattering.
- High density and Z-ratio constraints: With density 9.8 g/cm³ and Z-ratio 0.79, deposition rate monitoring and crystal sensor calibration must account for material-specific acoustic impedance to maintain film thickness accuracy.
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).
