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Terbium ( Tb )

Material Information

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We stock and supply the following standard forms:
Foil Lump Powder Rod Sputtering Target
Foil Lump Powder Rod Sputtering Target

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General Description:  

Terbium was discovered in 1843 by C.G. Mosander in Stockholm and was named after the Swedish town of Ytterby.

A lanthanide group metal, it is soft, malleable and ductile. Terbium has an abundance of 1.1 ppm in the earth's crust and is found in minerals in combination with other lanthanide group elements. It is slowly oxidized in air, the rate of the reaction being increased if terbium powder is used. Terbium reacts slowly with cold water.

Terbium is used in the semiconductor industry as a dopant.
   

Atomic Properties

Atomic number 65
Atomic radius - Goldschmidt ( nm ) 0.177
Atomic weight ( amu ) 158.9254
Crystal structure Hexagonal close packed
Electronic structure Xe 4f9 6s2
Ionization potential No. eV
1 5.85
2 11.52
Natural isotope distribution Mass No. %
159 100
Photo-electric work function ( eV ) 3.0
Thermal neutron absorption cross-section ( Barns ) 30
Valences shown 3, 4

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 116

Mechanical Properties

Material condition Polycrystalline
Bulk modulus ( GPa ) 40.8
Hardness - Vickers 60
Poisson's ratio 0.265
Tensile modulus ( GPa ) 57.5

Physical Properties

Boiling point ( C ) 3123
Density @20C ( g cm-3 ) 8.272
Melting point ( C ) 1356

Thermal Properties

Coefficient of thermal expansion @0-100C ( x10-6 K-1 ) 7.0
Latent heat of evaporation ( J g-1 ) 1840
Latent heat of fusion ( J g-1 ) 103
Specific heat @25C ( J K-1 kg-1 ) 183
Thermal conductivity @0-100C ( W m-1 K-1 ) 11.1

Buy Terbium on-line

We stock and supply the following standard forms:
Foil Lump Powder Rod Sputtering Target
Foil Lump Powder Rod Sputtering Target

Choose a form to search our on-line catalog  

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