Thulium Disk

Thulium Disk offers a compact, precisely shaped form of this rare earth element, valued for its unique optical emission, magnetic properties, and role in laser technologies. Known for producing blue and near-infrared emissions when activated, thulium is integral to advanced photonics, medical lasers, and research in solid-state devices. Industries such as medical technology, telecommunications, and defense use thulium disks in fabricating solid-state laser gain media, optical filters, and specialized sensing equipment. Specific applications include surgical lasers, fiber laser pumping, and infrared countermeasure systems. The disk geometry provides consistent, uniform material for thin-section machining, coating, or as a substrate in optical assemblies, making it a reliable format for both industrial manufacturing and precision research applications.

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Tolerance

Properties

Reference & Citations

Flammable

each

Tolerances

Disc

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

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	69
Crystal structure	Hexagonal close packed
Electronic structure	Xe 4f¹³ 6s²
Valences shown	2,3
Atomic weight( amu )	168.9342
Thermal neutron absorption cross-section( Barns )	115
Atomic radius - Goldschmidt( nm )	0.174
Ionisation potential( No./eV )	1/ 6.18
Ionisation potential( No./eV )	3/ 23.71
Ionisation potential( No./eV )	2/ 12.05

Mechanical Properties

Element	Value
Hardness - Brinell	53
Material condition	Polycrystalline
Poisson's ratio	0.235
Bulk modulus( GPa )	40.5
Tensile modulus( GPa )	76

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	90@20@20°C
Temperature coefficient( K⁻¹ )	0.00195@0-100°C

Physical Properties

Element	Value
Boiling point( C )	1947
Density( gcm⁻³ )	9.322@25°C

Thermal Properties

Element	Value
Melting point( C )	1545
Latent heat of evaporation( J g⁻¹ )	1456
Latent heat of fusion( J g⁻¹ )	109
Specific heat( J K⁻¹ kg⁻¹ )	160@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	16.9@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	11.6@0-400°C