Technical Data Sheet
Safety Data Sheet

Terbium Foil

Goodfellow's terbium foil is a thin sheet of pure terbium metal. With a silvery white appearance, terbium foil is soft, malleable, and ductile. It has excellent thermal and electrical conductivity. Due to its magnetic properties, terbium foil finds use in magnetostrictive alloys and terfenol-D, which convert magnetic energy to kinetic energy. The foil is also utilized as a dopant in optical materials when luminescent properties are desired. As part of Goodfellow's expansive foil inventory, terbium foil enables research and development across scientific fields.
Thickness: 0.6mm
Length 1: 50mm
Length 2: 50mm
Technical Name: Terbium
Formula: Tb
Percentage Purity: 93%
Density: 8.272g/cm³
Temper: As Rolled
UOM Code: 753-036-51
SKU: 1000224565
Product Code: TB00-FL-000167


Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
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Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
Technical Data Sheet
Safety Data Sheet

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Material Properties for Metals

Atomic Properties
Element Value
Atomic number 65
Crystal structure Hexagonal close packed
Electronic structure Xe 4f⁹ 6s²
Valences shown 3,4
Atomic weight( amu ) 158.9254
Thermal neutron absorption cross-section( Barns ) 30
Photo-electric work function( eV ) 3
Atomic radius - Goldschmidt( nm ) 0.177
Ionisation potential( No./eV ) 2/ 11.52
Ionisation potential( No./eV ) 1/ 5.85
Mechanical Properties
Element Value
Material condition Polycrystalline
Poisson's ratio 0.265
Bulk modulus( GPa ) 40.8
Tensile modulus( GPa ) 57.5
Hardness - Vickers( kgf mm⁻² ) 60
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 116@20@20°C
Physical Properties
Element Value
Boiling point( C ) 3123
Density( gcm⁻³ ) 8.272@20°C
Thermal Properties
Element Value
Melting point( C ) 1356
Latent heat of evaporation( J g⁻¹ ) 1840
Latent heat of fusion( J g⁻¹ ) 103
Specific heat( J K⁻¹ kg⁻¹ ) 183@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 11.1@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 7@0-100°C
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