Dysprosium Foil

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.

Quick Links:

Tolerance

Properties

Reference & Citations

each

Tolerances

Foil

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

Material Properties for Metals

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@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