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Vanadium–gallium (V3Ga) is a superconducting alloy of vanadium and gallium. It is often used for the high field insert coils of superconducting electromagnets.

Vanadium–gallium tape is used in superconducting magnets (magnetic fields of 17.5 teslas or 175,000 gauss). The structure of the superconducting A15 phase of V3Ga is similar to that of the more common Nb3Sn and Nb3Ti.[1]

In conditions where the magnetic field is higher than 8 Tesla and the temperature is higher than 4.2 Kelvin, Nb3Sn and V3Ga see use. The main property of V3Ga that makes it so useful is that it can be used in magnetic fields up to about 18 Tesla, while Nb3Sn can only be used in fields up to about 15 Tesla.[2]

The high field characteristics can be improved by doping with high-Z elements such as Nb, Ta, Sn, Pt and Pb[3]


Contents

Physical PropertiesEdit

Molecular Weight 222.55 g/mol
Melting Point 1720°C
Exact Mass 221.757452
Monoisotopic Mass 221.757452

[4]

V3Ga has an A15 phase, which makes it extremely brittle. One must be extremely cautious not to over-bend the wire when handling it. [2]


Superconducting propertiesEdit

Fabrication of superconductive wires or tapesEdit

V3Ga wires can be formed using solid-state precipitation[6]

ReferencesEdit

  1. ^ Markiewicz, W.; Mains, E.; Vankeuren, R.; Wilcox, R.; Rosner, C.; Inoue, H.; Hayashi, C.; Tachikawa, K. (1977). "A 17.5 Tesla superconducting concentric Nb3Sn and V3Ga magnet system". IEEE Transactions on Magnetics. 13 (1): 35–37. Bibcode:1977ITM....13...35M. doi:10.1109/TMAG.1977.1059431.
  2. ^ a b Reed, Richard P. Clark, Alan F.. (1983). Materials at Low Temperatures - 13.9.3.2 Filament Diameter. ASM International. Retrieved from https://app.knovel.com/hotlink/pdf/id:kt00AEBP4A/materials-at-low-temperatures/filament-diameter
  3. ^ Tedrow, P. M.; Meservy, R. (1984), "Improvement in magnetic field properties of vanadium-gallium superconductors by enhancement of spin-orbit scattering", Massachusetts Inst. Of Tech. Report, Bibcode:1984mit..reptR....T
  4. ^ American Elements. “Vanadium Gallide.” American Elements, Helicobacter, www.americanelements.com/vanadium-gallide-12024-15-6.
  5. ^ Decker, D. L. Laquer, H. L. (1969), "Magnetization Studies on Superconducting Vanadium‐Gallium", Journal of Applied Physics, 40 (7): 2817–2822, Bibcode:1969JAP....40.2817D, doi:10.1063/1.1658081CS1 maint: Multiple names: authors list (link)
  6. ^ Hong, Minghwei (1980), A15 SUPERCONDUCTORS THROUGH DIRECT ""SOLID-STATE"" PRECIPITATION: V3Ga AND N63AI