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Bismuth (Bi) 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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Bismuth (Bi) evaporation pellets require selection of compatible deposition source hardware (Mo/W/Ta boat or graphite/alumina crucible) and process route (thermal/resistive or low-power e-beam). The material's melting point (271°C), density (9.8 g/cm³), and Z-ratio (0.79) must be used to calibrate evaporation parameters and film thickness monitoring.
- Deposition Source Compatibility: Evaporation source hardware must be selected from Mo/W/Ta boat or graphite/alumina crucible based on the chosen evaporation method.
- Process Route Matching: Thermal/resistive evaporation is preferred; low-power e-beam may be used with appropriate source hardware.
- Melting Point Parameter: The melting point of 271°C is a critical parameter for setting evaporation temperature and rate.
- Film Thickness Calibration: The Z-ratio of 0.79 must be entered into the quartz crystal monitor for accurate film thickness measurement.
- Pack Size Consideration: Pack sizes from 25g to 1kg affect loading quantity and require confirmation of deposition source geometry before ordering.
What is the preferred evaporation method for bismuth (Bi) pellets, and what boat or crucible materials are compatible?
Thermal or resistive evaporation is the preferred method for bismuth pellets, though low-power electron-beam evaporation is optional. Compatible source materials include molybdenum, tungsten, or tantalum boats, as well as graphite or alumina crucibles, as specified in the product datasheet.
What is the significance of the Z-ratio value of 0.79 for bismuth evaporation material?
The Z-ratio of 0.79 is a critical parameter for quartz crystal microbalance (QCM) film thickness monitoring during deposition. It corrects for the acoustic impedance mismatch between the crystal and bismuth, enabling accurate rate and thickness control. This value is specific to the 99.999% pure bismuth pellets provided.
How does the 99.999% purity of bismuth pellets affect thin film quality in vacuum deposition?
The 99.999% purity minimizes trace metal contaminants, ensuring reproducible film stoichiometry and electrical or optical properties in critical applications. The datasheet notes that this high-purity grade allows direct comparison with standard and RFQ-controlled grades for precise process matching.
Atomfair bismuth evaporation pellets (99.999%, 3-6 mm) offer high-purity material for thin-film deposition with flexibility in evaporation method, though the low melting point and source geometry requirements necessitate careful process and hardware matching.
Positive
- High-purity 99.999% bismuth pellets: The 99.999% purity level minimizes contamination in thin-film deposition, ensuring consistent film properties for research-grade applications.
- Flexible evaporation method compatibility: Supports thermal/resistive evaporation and low-power e-beam with Mo/W/Ta boats or graphite/alumina crucibles, allowing adaptation to various deposition systems.
Trade-offs
- Low melting point requires process control: With a melting point of 271°C, bismuth evaporates at low temperatures, demanding precise thermal management to avoid uncontrolled evaporation or spitting during deposition.
- Source geometry compatibility verification needed: The pellet size (3-6 mm) and source boat/crucible type must be matched to the deposition system; buyers must confirm geometry before ordering to ensure proper loading and evaporation.
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).
