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Bismuth Evaporation Material (Bi)

Bismuth Evaporation Material (Bi)
Material Type Bismuth
Symbol Bi
Atomic Weight 208.9804
Atomic Number 83
Color/Appearance Lustrous Reddish White, Metallic
Thermal Conductivity 8 W/m.K
Melting Point (°C) 271
Coefficient of Thermal Expansion 13.4 x 10-6/K
Theoretical Density (g/cc) 9.8
Z Ratio 0.79
E-Beam Excellent

Thermal Evaporation Techniques
 
Boat:  W, Mo, Ta
Coil:  W
Basket:  W
Crucible:  Al2O3
 
E-Beam Crucible Liner Material Fabmate®, Graphite
Temp. (°C) for Given Vap. Press. (Torr) 10-8:  330
10-6:  410
10-4:  520
Export Control (ECCN) 1C229
Comments Resistivity high. Low Melting Point materials not ideal for sputtering.

General

Bismuth is a chemical element with symbol Bi and atomic number 83. Bismuth, a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. Elemental bismuth may occur naturally, although its sulfide and oxide form important commercial ores. The free element is 86% as dense as lead. It is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. Bismuth is slightly radioactive and the most naturally diamagnetic element, and has one of the lowest values of thermal conductivity among metals.

Material Notes

AEM Deposition provides Bismuth pieces, and Bismuth powder for sale, purity is 99.9%, 99.999%.

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