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Gadolinium ( Gd )

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 in 1880 by J.C. Galissard in Geneva, Switzerland, and isolated by P.E. Lecoq de Boisbaudran in 1886 in Paris, France.

Gadolinium is a member of the lanthanide group of elements, and is obtained from the same sources as europium (its abundance in the Earth's crust is 7.7 ppm). It is a silvery white metal which is ductile and malleable. It is stable in a dry atmosphere but forms an oxide coating when exposed to moist air. It reacts slowly with water and is soluble in acids. Gadolinium has limited uses as a pure metal, but when alloyed with chromium, iron or similar metals, the resulting alloys have improved workability and corrosion resistance. Due to its magnetic properties, gadolinium is used in the manufacture of magnets, recording heads and electrical components.

   

Atomic Properties

Atomic number 64
Atomic radius - Goldschmidt ( nm ) 0.180
Atomic weight ( amu ) 157.25
Crystal structure Hexagonal close packed
Electronic structure Xe 4f7 5d1 6s2
Ionization potential No. eV
1 6.14
2 12.1
Natural isotope distribution Mass No. %
152 0.2
154 2.2
155 14.8
156 20.5
157 15.7
158 24.8
160 21.8
Photo-electric work function ( eV ) 3.1
Thermal neutron absorption cross-section ( Barns ) 49000
Valences shown 3

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 134
Temperature coefficient @0-100C ( K-1 ) 0.00176

Mechanical Properties

Material condition Polycrystalline
Bulk modulus ( GPa ) 39.1
Hardness - Vickers 55
Poisson's ratio 0.26
Tensile modulus ( GPa ) 56.2
Tensile strength ( MPa ) 193
Yield strength ( MPa ) 179

Physical Properties

Boiling point ( C ) 3266
Density @25C ( g cm-3 ) 7.895
Melting point ( C ) 1313

Thermal Properties

Coefficient of thermal expansion @0-100C ( x10-6 K-1 ) 6.4
Latent heat of evaporation ( J g-1 ) 1920
Latent heat of fusion ( J g-1 ) 98.7
Specific heat @25C ( J K-1 kg-1 ) 230
Thermal conductivity @0-100C ( W m-1 K-1 ) 10.5
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 Gadolinium 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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