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Germanium Pellets

Germanium pellets from Goodfellow offer high purity and precise dimensions for research and industrial applications. With a melting point of 937°C, germanium pellets exhibit semiconducting properties and high electron mobility. This makes germanium suitable for transistors, solar cells, and infrared optics. Goodfellow provides germanium pellets in a range of sizes and purities to meet your experimental needs. As a leading supplier of metals, ceramics, polymers and other materials, Goodfellow has germanium pellets to support prototyping through production.
Maximum Lump Size: 10mm
Weight: 20g
Technical Name: Germanium
Formula: Ge
Percentage Purity: 99.999%
Density: 5.323g/cm³
CAS Number: 7440-56-4
Structure: Polycrystalline
UOM Code: 271-097-06
SKU: 1000114732
Product Code: GE00-LP-000101

Tolerances

Pellets
Maximum Lump Size Nominal
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Tolerances

Pellets
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Material Properties for Metals

Atomic Properties
Element Value
Atomic number 32
Crystal structure Diamond
Electronic structure Ar 3d¹⁰ 4s² 4p²
Valences shown 2,4
Atomic weight( amu ) 72.59
Thermal neutron absorption cross-section( Barns ) 2.3
Photo-electric work function( eV ) 4.8
Natural isotope distribution( Mass No./% ) 72/ 27.4
Natural isotope distribution( Mass No./% ) 73/ 7.8
Natural isotope distribution( Mass No./% ) 76/ 7.8
Natural isotope distribution( Mass No./% ) 70/ 20.5
Natural isotope distribution( Mass No./% ) 74/ 36.5
Atomic radius - Goldschmidt( nm ) 0.139
Ionisation potential( No./eV ) 4/ 45.7
Ionisation potential( No./eV ) 3/ 34.22
Ionisation potential( No./eV ) 1/ 7.90
Ionisation potential( No./eV ) 5/ 93.5
Ionisation potential( No./eV ) 2/ 15.93
Mechanical Properties
Element Value
Hardness - Mohs 6.25
Material condition Polycrystalline
Poisson's ratio 0.32
Bulk modulus( GPa ) 73.9
Tensile modulus( GPa ) 79.9
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 46x10⁶@22@22°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 33.9
Physical Properties
Element Value
Boiling point( C ) 2830
Density( gcm⁻³ ) 5.32@20°C
Thermal Properties
Element Value
Melting point( C ) 937.4
Latent heat of evaporation( J g⁻¹ ) 4516
Latent heat of fusion( J g⁻¹ ) 465
Specific heat( J K⁻¹ kg⁻¹ ) 322@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 60.2@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 5.75@0-100°C
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