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Dysprosium Foil

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Properties common to all products in this list

Commodity: Metals Material: Dysprosium Form: Foil/Film/Sheet Composition: Dy CAS Number: 7429-91-6 Purity: 99% Temper: As Rolled Coating: Uncoated Surface Finish: Standard
Dysprosium Foil is a thin, highly pure form of the rare earth metal valued for its pronounced ferromagnetism at cryogenic temperatures and significant magneto-optical capabilities. It possesses high magnetic anisotropy, making it ideal for applications where directional magnetic behavior is critical. Industries making extensive use of Dysprosium Foil include magnetics, photonics, and microelectronics. Notable applications include enhancing the thermal stability of NdFeB permanent magnets, enabling high-performance optical isolators through dysprosium-doped garnet films, and serving as precision magnetic layers in compact beamline insertion devices. Research increasingly focuses on Dysprosium Foil’s role in hybrid magneto-optical systems, as its thin form factor allows integration into microfabricated devices without compromising performance. In scientific and industrial contexts, Dysprosium Foil is indispensable for developing advanced magnetic, optical, and quantum-enabled technologies.
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Material Properties

Atomic Properties
Element Value
Atomic number 66
Crystal structure Hexagonal close packed
Electronic structure Xe 4f¹⁰ 6s²
Valences shown 3
Atomic weight( amu ) 162.5
Thermal neutron absorption cross-section( Barns ) 930
Natural isotope distribution( Mass No./% ) 164/ 28.20
Natural isotope distribution( Mass No./% ) 160/ 2.34
Natural isotope distribution( Mass No./% ) 163/ 24.90
Natural isotope distribution( Mass No./% ) 158/ 0.10
Natural isotope distribution( Mass No./% ) 156/ 0.06
Natural isotope distribution( Mass No./% ) 161/ 18.90
Natural isotope distribution( Mass No./% ) 162/ 25.50
Atomic radius - Goldschmidt( nm ) 0.177
Ionisation potential( No./eV ) 1/ 5.93
Ionisation potential( No./eV ) 2/ 11.67
Mechanical Properties
Element Value
Material condition Polycrystalline
Poisson's ratio 0.232
Bulk modulus( GPa ) 39.2
Tensile modulus( GPa ) 63.1
Hardness - Vickers( kgf mm⁻² ) 55
Tensile strength( MPa ) 248
Yield strength( MPa ) 228
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 91@20°C
Temperature coefficient( K⁻¹ ) 0.0012@0-100°C
Physical Properties
Element Value
Boiling point( C ) 2562
Density( gcm⁻³ ) 8.536@20°C
Thermal Properties
Element Value
Melting point( C ) 1412
Latent heat of evaporation( J g⁻¹ ) 1725
Latent heat of fusion( J g⁻¹ ) 105
Specific heat( J K⁻¹ kg⁻¹ ) 173@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 10.7@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8.6@0-100°C
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Available Configurations

Properties common to all products in this list

Commodity: Metals Material: Dysprosium Form: Foil Composition: Dy CAS Number: 7429-91-6 Purity: 99% Temper: As Rolled Coating: Uncoated Surface Finish: Standard

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Tolerances

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