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Erbium ( Er )

Material Information

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Foil Lump Powder Rod Sputtering Target Wire
Foil Lump Powder Rod Sputtering Target Wire

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General Description:  

Discovered by C.G. Mosander in 1842 in Stockholm, Sweden.

A member of the lanthanide group of elements, erbium is a silver grey metal. It has high electrical resistivity and has properties similar to holmium and dysprosium. It is always found in combination with other rare earths, being found in small quantities in the same minerals as dysprosium (gadolinite, fergusonite and xenotime); its abundance in the Earth's crust is 3.8 ppm. It slowly tarnishes in air, reacts slowly with water and dissolves in acids. It has limited applications as a pure metal, but is used as an alloying element with titanium and is also used to produce infra-red absorbing glass. Erbium oxide is used within the ceramics industry to produce a pink glaze.

   

Atomic Properties

Atomic number 68
Atomic radius - Goldschmidt ( nm ) 0.175
Atomic weight ( amu ) 167.26
Crystal structure Hexagonal close packed
Electronic structure Xe 4f12 6s2
Ionization potential No. eV
1 6.10
2 11.93
Natural isotope distribution Mass No. %
162 0.1
164 1.6
166 33.4
167 22.9
168 27.0
170 15.0
Thermal neutron absorption cross-section ( Barns ) 160
Valences shown 3

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 86
Temperature coefficient @0-100C ( K-1 ) 0.00201

Mechanical Properties

Material condition Polycrystalline
Bulk modulus ( GPa ) 41.8
Hardness - Vickers 70
Poisson's ratio 0.207
Tensile modulus ( GPa ) 73.3
Tensile strength ( MPa ) 292
Yield strength ( MPa ) 292

Physical Properties

Boiling point ( C ) 2863
Density @20C ( g cm-3 ) 9.051
Melting point ( C ) 1529

Thermal Properties

Coefficient of thermal expansion @0-100C ( x10-6 K-1 ) 9.2
Latent heat of evaporation ( J g-1 ) 1680
Latent heat of fusion ( J g-1 ) 103
Specific heat @25C ( J K-1 kg-1 ) 168
Thermal conductivity @0-100C ( W m-1 K-1 ) 14.5
All information and technical data are given as a guide only. Although every effort has been made to ensure that the information is correct, no warranty is given as to its completeness or accuracy.

Buy Erbium on-line

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

Choose a form to search our on-line catalog  

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