Chemical Formula: Ge
Catalog Number: ST0016
CAS Number: 7440-56-4
Purity: >99.99%, 99.999%
Shape: Discs, Plates, Column Targets, Step Targets, Custom-made
Atomic Weight: 72.63
Atomic Number: 32
Color/Appearance: Grayish White, Semi-Metallic
Thermal Conductivity: 60 W/m.K
Melting Point (°C): 937
Bulk Resistivity: 5-40 ohm-cm
Coefficient of Thermal Expansion: 6 x 10-6/K
Theoretical Density (g/cc): 5.32
Z Ratio: 0.516
Sputter: DC (doped), RF
Max Power Density* (Watts/Square Inch): 20
Type of Bond: Indium, Elastomer
Comments: Excellent films from E-beam.
1. Indium bonding is recommended for this material, due to some of its characteristics not amenable to sputtering like brittleness, low thermal conductivity, etc. 2. This material has a low thermal conductivity are susceptible to thermal shock.
Germanium is a chemical element originated from Germany (with the Latin name Germania). It was first mentioned in 1886 and observed by A. Winkler. “Ge” is the canonical chemical symbol of germanium. Its atomic number in the periodic table of elements is 32 with location at Period 4 and Group 14, belonging to the p-block. The relative atomic mass of germanium is 72.64(1) Dalton, the number in the brackets indicating the uncertainty.
Like silicon, germanium is a semiconductor and frequently utilized in the fabrication of transistors and integrated circuits. It is often evaporated under vacuum to create layers in the production of optical storage media and optical coatings. Other uses of the material are as an alloying agent and catalyst.
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