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Dysprosium Foil (Light Tight)

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Properties common to all products in this list

Commodity: Metals Material: Dysprosium Form: Foil (Light Tight) Composition: Dy CAS Number: 7429-91-6 Purity: 99% (2N) Temper: As Rolled Opacity: Light Tight
Dysprosium Foil (Light Tight) combines the intrinsic magnetic strength and anisotropy of high-purity dysprosium with the engineered benefit of complete light-blocking capability, ensuring zero optical transmission even under intense illumination. This dual functionality makes it uniquely suited for environments requiring both magnetic performance and optical shielding. It is deployed in industries such as photonics, precision magnetics, and advanced optics manufacturing. Key applications include serving as a light-occluding magnetic layer in sensitive optical systems, acting as a magnetic shielding element in photodetector housings, and integrating into beamline instrumentation where stray light must be eliminated without compromising magnetic field control. In research, Dysprosium Foil (Light Tight) supports innovation in high-resolution imaging, optical isolation, and magnetic field manipulation for quantum and cryogenic devices. In both scientific and industrial contexts, it delivers unmatched value by merging optical isolation with the robust functional characteristics of dysprosium.

Flammable

Starting at $423.00 each
No Minimum order Approx. 2 weeks leadtime Free technical support Free delivery available

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 (Light Tight) Composition: Dy CAS Number: 7429-91-6 Purity: 99% (2N) Temper: As Rolled Opacity: Light Tight

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Tolerances

Foil (Light Tight)
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
Linear dimension <100mm ±1mm
Linear dimension >=100mm +2 / -1%