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Bismuth (Bi) Evaporation Material, Pieces, 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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Bismuth (Bi) evaporation material requires careful selection of evaporation source and method due to its low melting point and specific material properties. Deposition parameters must be matched to the material's density, Z-ratio, and thermal behavior to achieve consistent film quality.
- Evaporation Source Compatibility: Use Mo/W/Ta boat or graphite/alumina crucible for thermal evaporation of bismuth.
- Evaporation Method Preference: Thermal/resistive evaporation is the preferred method; low-power e-beam evaporation is optional but requires careful power control.
- Material Property Influence: The melting point of 271°C, density of 9.8 g/cm³, and Z-ratio of 0.79 must be considered when setting deposition parameters.
- Process Matching Requirement: Match the deposition source geometry and process route to the material's behavior and the required film properties.
What is the recommended evaporation source and method for Bismuth (Bi) pieces with 99.999% purity?
Thermal or resistive evaporation is the preferred method for Bismuth, using a Mo, W, or Ta boat or a graphite/alumina crucible. Low-power e-beam evaporation is also optional. This recommendation is based on the material's melting point of 271°C and density of 9.8 g/cm³, which are suitable for these source configurations.
How does the 3-6 mm piece size of Bismuth evaporation material impact its use in vacuum deposition?
The 3-6 mm piece size is specified to facilitate loading into evaporation sources such as boats or crucibles. Buyers should confirm that this size range is compatible with their specific deposition source geometry to ensure proper material feeding and uniform evaporation. The product is supplied as pieces rather than powders or granules, which may affect thermal contact and evaporation rate.
Why is the Z-Ratio of 0.79 important for Bismuth evaporation in thin-film deposition?
The Z-Ratio (acoustic impedance ratio) of 0.79 is a critical parameter for quartz crystal microbalance (QCM) thickness monitoring during deposition. This value indicates the material-dependent correction factor needed to accurately measure film thickness from the crystal's frequency shift. Incorrect Z-Ratio values can lead to significant thickness errors in the deposited film.
Bismuth (Bi) evaporation material with 99.999% purity in 3-6 mm pieces offers high-purity deposition capability, but its low melting point and high density demand precise process control for consistent thin-film quality.
Positive
- High Purity (99.999%): Enables deposition of high-quality thin films with minimal impurity-induced defects, critical for research-grade applications in electronics and photonics.
- Optimized Physical Form: Pieces 3-6 mm size range facilitates consistent source loading and stable evaporation rates in Mo/W/Ta boats or graphite/alumina crucibles.
Trade-offs
- Low Melting Point (271°C): Requires careful temperature control during evaporation to avoid premature melting or splattering, especially in high-vacuum systems where thermal gradients can cause non-uniform deposition.
- High Density and Z-Ratio: Density of 9.8 g/cm³ may necessitate slower deposition rates or adjusted source parameters; Z-ratio of 0.79 deviates from ideal quartz crystal microbalance response, potentially complicating real-time thickness monitoring.
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).
