Superconducting critical current density of bronze processed pure and alloyed Nb/sub 3/Sn at very high magnetic fields (up to 24 T)

Journal Article · Tue May 01 04:00:00 EDT 1984 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.94934· OSTI ID:6887855

Suenaga, M; Tsuchiya, K; Higuchi, N

Superconducting critical current densities J/sub c/ of pure and alloyed Nb/sub 3/Sn layers of bronze processed monofilamentary wires were measured at 1.8 and 4.2 K in magnetic fields up to 24 T. The maximum in J/sub c/ at 20 T was found for Nb/sub 3/Sn layers which were fabricated using (Nb approx.3.3 at. % Ti) cores, and the values of J/sub c/ were approx.670 and approx.370 A/mm/sup 2/ at 1.8 and 4.2 K, respectively. These values are approx.5 and approx.25 times greater than those for ''pure'' Nb/sub 3/Sn wires at these same temperatures. The functional dependence of J/sub c/ on the Ti content was also identical to that for the measured values of H/sub c/2 vs Ti content for these wires. The maximum value of H/sub c/2 of the wires with the matrix in place was 26.3 T for the wire which was fabricated from the core containing 3.3 at. % Ti in Nb.

• Research Organization: Division of Metallurgy and Materials Science, Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6887855
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 44:9; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
ELEMENTS
FABRICATION
LAYERS
MAGNETIC FIELDS
METALS
NIOBIUM ALLOYS
SUPERCONDUCTING WIRES
TIN ALLOYS
TITANIUM
TITANIUM ALLOYS
TRANSITION ELEMENTS
WIRES