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Samarium ( Sm )

Material Information

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

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General Description:  

Samarium was discovered in 1879 by P.E. Lecoq and was named after the mineral "Samarskite" which, in turn, was named after the Russian mine official, Colonel V.E. Samarsky.

A lanthanide group element, samarium is a silvery-white metal which is found in the minerals allanite, cerite, gadolinite and its namesake, samarskite; it has an abundance on earth of 7.9 ppm. It is relatively stable in dry air but oxidises on contact with moisture.

Applications of the metal are limited, but it finds uses in the glass, ceramics and electronics industries and also in the manufacture of permanent magnets (when combined with cobalt).

   

Atomic Properties

Atomic number 62
Atomic radius - Goldschmidt ( nm ) 0.180
Atomic weight ( amu ) 150.36
Crystal structure Rhombohedral
Electronic structure Xe 4f6 6s2
Ionization potential No. eV
1 5.63
2 11.07
Natural isotope distribution Mass No. %
144 3.1
147 15.1
148 11.3
149 13.9
150 7.4
152 26.6
154 22.6
Photo-electric work function ( eV ) 2.7
Thermal neutron absorption cross-section ( Barns ) 5820
Valences shown 2, 3

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 92
Temperature coefficient @0-100C ( K-1 ) 0.00148

Mechanical Properties

Material condition Polycrystalline
Bulk modulus ( GPa ) 29.9
Poisson's ratio 0.310
Tensile modulus ( GPa ) 34.1
Tensile strength ( MPa ) 124
Yield strength ( MPa ) 110

Physical Properties

Boiling point ( C ) 1791
Density @20C ( g cm-3 ) 7.536
Melting point ( C ) 1077

Thermal Properties

Latent heat of evaporation ( J g-1 ) 1280
Latent heat of fusion ( J g-1 ) 72.4
Specific heat @25C ( J K-1 kg-1 ) 180
Thermal conductivity @0-100C ( W m-1 K-1 ) 13.3

Buy Samarium 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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