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Formula: Ho
Form: Foil (Light Tight)
Material: Holmium
CAS Number: 7440-60-0
Commodity: Metals
Purity: 99%
Temper: As Rolled
Light Tight: Light Tight
Hazard Pictogram: GHS02
Holmium Foil (Light Tight) is a thin foil of holmium metal that blocks visible light. With high magnetic susceptibility, it has applications in Faraday rotators and optical isolators. Available in 29 thicknesses, our Holmium Foil (Light Tight) range enables customization for quantum optics experiments. It’s also ideal for research applications requiring high purity single crystal films opaque to visible and infrared wavelengths.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Flammable

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Material Properties for Metals

Atomic Properties
Element Value
Atomic number 67
Crystal structure Hexagonal close packed
Electronic structure Xe 4f¹¹ 6s²
Valences shown 3
Atomic weight( amu ) 164.9304
Thermal neutron absorption cross-section( Barns ) 65
Atomic radius - Goldschmidt( nm ) 0.176
Ionisation potential( No./eV ) 2/ 11.80
Ionisation potential( No./eV ) 1/ 6.02
Mechanical Properties
Element Value
Material condition Polycrystalline
Poisson's ratio 0.225
Bulk modulus( GPa ) 40.5
Tensile modulus( GPa ) 66.9
Hardness - Vickers( kgf mm⁻² ) 60
Tensile strength( MPa ) 262
Yield strength( MPa ) 221
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 94@20@20°C
Temperature coefficient( K⁻¹ ) 0.00171@0-100°C
Physical Properties
Element Value
Boiling point( C ) 2695
Density( gcm⁻³ ) 8.803@20°C
Thermal Properties
Element Value
Melting point( C ) 1474
Latent heat of evaporation( J g⁻¹ ) 1695
Latent heat of fusion( J g⁻¹ ) 104
Specific heat( J K⁻¹ kg⁻¹ ) 165@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 16.2@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 9.5@0-400°C

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