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Bismuth (Bi) Evaporation Material, Pellets, 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 pellets require compatible source hardware and process parameters for successful thin-film deposition. The material's low melting point and high density demand careful selection of evaporation method and rate monitoring.
- Source Material Compatibility: Use only Mo/W/Ta boats or graphite/alumina crucibles to avoid contamination during evaporation.
- Evaporation Method Preference: Thermal resistive evaporation is the preferred method; low-power e-beam may be used with appropriate source hardware.
- Melting Point Consideration: The melting point of 271°C requires controlled heating to prevent splattering or incomplete evaporation.
- Z-Ratio Calibration: The Z-ratio of 0.79 must be accounted for in quartz crystal monitor calibration for accurate film thickness measurement.
What is the recommended evaporation method for Bismuth pellets and why is e-beam limited?
Thermal/resistive evaporation is preferred for Bismuth pellets due to the low melting point of 271 °C, which allows efficient vaporization with minimal thermal stress. Low-power e-beam evaporation is listed as optional but requires careful control to avoid overheating, as the material's density of 9.8 g/cm³ and Z-ratio of 0.79 influence deposition rate stability and film thickness monitoring accuracy.
What boat or crucible materials are compatible with Bismuth evaporation?
Bismuth evaporation is compatible with molybdenum, tungsten, or tantalum boats, as well as graphite or alumina crucibles. These materials are specified in the product description to withstand the low melting point (271 °C) without significant risk of alloying or contamination, ensuring purity retention during deposition.
What is the significance of the Z-ratio of 0.79 for Bismuth evaporation material?
The Z-ratio of 0.79 is a material-specific parameter used for quartz crystal microbalance (QCM) thickness monitoring during deposition. It indicates a moderate acoustic impedance mismatch, requiring calibration to ensure accurate film thickness and deposition rate control, which is critical for achieving repeatable thin-film properties with this 99.99% pure Bismuth pellets.
Bismuth (Bi) evaporation pellets with 99.99% purity and 1-3 mm size are optimized for thermal evaporation using Mo/W/Ta boats or graphite/alumina crucibles, but the low melting point (271°C) requires careful temperature regulation to maintain process stability.
Positive
- High purity 99.99% for reliable films: Bismuth pellets with 99.99% purity minimize contamination in thin-film deposition, ensuring consistent film properties for research applications.
- Controlled pellet size 1-3 mm: The specified 1-3 mm pellet size facilitates uniform loading into boats or crucibles, supporting reproducible evaporation rates.
Trade-offs
- Low melting point requires temperature control: Bismuth melts at 271°C, demanding precise thermal management to avoid premature evaporation or splattering during deposition.
- Specific source hardware required: Pellet form is compatible only with Mo/W/Ta boats or graphite/alumina crucibles, limiting direct use with e-beam systems without low-power adaptation.
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).
