Gadolinium Disk

Gadolinium Disk is a rare-earth metal component valued for its ferromagnetic properties, high neutron absorption cross-section, and compatibility with precision machining into stable disk geometries. With a hexagonal close-packed crystal structure at ambient temperature and a Curie temperature of ~292 K, it exhibits sharp magnetic transitions that make it indispensable in magnetic characterization studies and material research. Applications span magnetic refrigeration systems, advanced sensor technologies, and high-precision magnetic shielding. Specific uses include neutron diffraction studies of single-crystal Gd disks to investigate spin orientation behavior, magnetic entropy change experiments for caloric effect optimization, and precision calibration standards in magnetometry. In research and innovation, gadolinium disks enable fundamental investigations into magnetic ordering, anisotropy, and thermal spin dynamics, underpinning the design of next-generation magnetic devices and high-performance functional materials. Their purity, form stability, and magnetic responsiveness secure their role across both scientific and industrial domains.

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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	64
Crystal structure	Hexagonal close packed
Electronic structure	Xe 4f⁷ 5d¹ 6s²
Valences shown	3
Atomic weight( amu )	157.25
Thermal neutron absorption cross-section( Barns )	49000
Photo-electric work function( eV )	3.1
Natural isotope distribution( Mass No./% )	160/ 21.8
Natural isotope distribution( Mass No./% )	155/ 14.8
Natural isotope distribution( Mass No./% )	157/ 15.7
Natural isotope distribution( Mass No./% )	152/ 0.2
Natural isotope distribution( Mass No./% )	158/ 24.8
Natural isotope distribution( Mass No./% )	156/ 20.5
Natural isotope distribution( Mass No./% )	154/ 2.2
Atomic radius - Goldschmidt( nm )	0.18
Ionisation potential( No./eV )	2/ 12.1
Ionisation potential( No./eV )	1/ 6.14

Mechanical Properties

Element	Value
Material condition	Polycrystalline
Poisson's ratio	0.26
Bulk modulus( GPa )	39.1
Tensile modulus( GPa )	56.2
Hardness - Vickers( kgf mm⁻² )	55
Tensile strength( MPa )	193
Yield strength( MPa )	179

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	134@20@20°C
Temperature coefficient( K⁻¹ )	0.00176@0-100°C

Physical Properties

Element	Value
Boiling point( C )	3266
Density( gcm⁻³ )	7.895@25°C

Thermal Properties

Element	Value
Melting point( C )	1313
Latent heat of evaporation( J g⁻¹ )	1920
Latent heat of fusion( J g⁻¹ )	98.7
Specific heat( J K⁻¹ kg⁻¹ )	230@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	10.5@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	6.4@0-100°C