Niobium Square Single Crystal

Niobium Square Single Crystal offers exceptional superconducting performance, high purity, and low thermal expansion in a precision-cut square geometry. The single-crystal structure eliminates grain boundaries, improving electrical conductivity and reducing losses in superconducting applications. Its geometry is ideal for integration into modular arrays, resonators, and precision mounting systems. Industries including particle acceleration, quantum computing, and advanced optics employ it in superconducting qubits, SRF cavity segments, and ultra-stable optical elements. In research, it is critical for studying anisotropic superconducting properties, surface treatments for RF applications, and crystal defect engineering. The square form facilitates uniform mounting, modular assembly, and predictable mechanical behavior, making it a valuable component in high-end superconducting and precision-engineered systems.

Formula: Nb
Percentage Purity: 99.999%
Thickness: 1mm
Size: 4x4mm
Orientation: -100
Orientation Accuracy: Approx. 0.1°
Polish: Polished
Surface Finish: =< 0.03µm Ra
CAS Number: 7440-03-1
UOM Code: 128-239-36
Legacy Code: NB002003
Distributor Code: GF12823936

SKU: 1000036365

Product Code: NB00-SC-000165

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Tolerances

Single Crystal

Orientation		See Item
Thickness		+2% / -1%
Length		+2% / -1%

Square

Size		+2% / -1%

Tolerances

Single Crystal

Orientation		See Item
Thickness		+2% / -1%
Length		+2% / -1%

Square

Size		+2% / -1%

Technical Data Sheet

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Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	41
Crystal structure	Body centred cubic
Electronic structure	Kr 4d⁴ 5s¹
Valences shown	2, 3, 4, 5
Atomic weight( amu )	92.9064
Thermal neutron absorption cross-section( Barns )	1.15
Photo-electric work function( eV )	4.3
Atomic radius - Goldschmidt( nm )	0.147
Ionisation potential( No./eV )	3/ 25.0
Ionisation potential( No./eV )	2/ 14.3
Ionisation potential( No./eV )	6/ 103
Ionisation potential( No./eV )	1/ 6.88
Ionisation potential( No./eV )	4/ 38.3
Ionisation potential( No./eV )	5/ 50.5

Mechanical Properties

Element	Value
Material condition	Hard
Material condition	Soft
Poisson's ratio	0.397
Poisson's ratio	0.397
Bulk modulus( GPa )	170.3
Bulk modulus( GPa )	170.3
Tensile modulus( GPa )	104.9
Tensile modulus( GPa )	104.9
Izod toughness( J m⁻¹ )	10-120
Hardness - Vickers( kgf mm⁻² )	115
Hardness - Vickers( kgf mm⁻² )	160
Tensile strength( MPa )	330
Tensile strength( MPa )	585
Yield strength( MPa )	550
Yield strength( MPa )	240

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	16@20@20°C
Superconductivity critical temperature( K )	9.25
Temperature coefficient( K⁻¹ )	0.0026@0-100°C

Physical Properties

Element	Value
Boiling point( C )	4742
Density( gcm⁻³ )	8.57@20°C

Thermal Properties

Element	Value
Melting point( C )	2468
Latent heat of evaporation( J g⁻¹ )	7360
Latent heat of fusion( J g⁻¹ )	290
Specific heat( J K⁻¹ kg⁻¹ )	268@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	53.7@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	7.2@0-100°C