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Formula: Gd
Form: Foil/Film/Sheet
Material: Gadolinium
CAS Number: 7440-54-2
Commodity: Metals
Purity: 99%
Temper: As Rolled
Gadolinium (Gd) foil is widely used in neutron capture applications due to its exceptionally high neutron absorption cross-section, making it essential in neutron radiography and in specialized radiation shielding for particle detectors and certain test reactor systems. Its strong paramagnetic properties support advanced magnet design in material science research. Additionally, gadolinium foil is employed in select radiation therapy equipment to help manage exposure in clinical settings. Ongoing studies explore the use of gadolinium foil and thin films for improved shielding efficiency, cryogenic technologies, thin-film sensor development, and high-performance magnetic applications in electronics and aerospace.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Foil/Film/Sheet
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 64
Crystal structure Hexagonal close packed
Electronic structure Xe 4f⁷ 5d¹ 6s²
Valences shown 3
Atomic weight( amu ) 157.25
Thermal neutron absorption cross-section( Barns ) 49000
Photo-electric work function( eV ) 3.1
Natural isotope distribution( Mass No./% ) 160/ 21.8
Natural isotope distribution( Mass No./% ) 155/ 14.8
Natural isotope distribution( Mass No./% ) 157/ 15.7
Natural isotope distribution( Mass No./% ) 152/ 0.2
Natural isotope distribution( Mass No./% ) 158/ 24.8
Natural isotope distribution( Mass No./% ) 156/ 20.5
Natural isotope distribution( Mass No./% ) 154/ 2.2
Atomic radius - Goldschmidt( nm ) 0.18
Ionisation potential( No./eV ) 2/ 12.1
Ionisation potential( No./eV ) 1/ 6.14
Mechanical Properties
Element Value
Material condition Polycrystalline
Poisson's ratio 0.26
Bulk modulus( GPa ) 39.1
Tensile modulus( GPa ) 56.2
Hardness - Vickers( kgf mm⁻² ) 55
Tensile strength( MPa ) 193
Yield strength( MPa ) 179
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 134@20@20°C
Temperature coefficient( K⁻¹ ) 0.00176@0-100°C
Physical Properties
Element Value
Boiling point( C ) 3266
Density( gcm⁻³ ) 7.895@25°C
Thermal Properties
Element Value
Melting point( C ) 1313
Latent heat of evaporation( J g⁻¹ ) 1920
Latent heat of fusion( J g⁻¹ ) 98.7
Specific heat( J K⁻¹ kg⁻¹ ) 230@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 10.5@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 6.4@0-100°C

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