Temperature dependences of superconducting critical current density and upper critical field for V/sub 2/(Hf,Zr) multifilamentary wire

Conference · Fri Mar 01 00:00:00 EST 1985 · IEEE Trans. Magn.; (United States)

OSTI ID:6485502

Inoue, K; Kuroda, T; Tachikawa, K

The temperature dependences of the critical current density, J /SUB c/ , and the upper critical field, uH /SUB c2/ , have been studied for newly developed V/sub 2/(Hf,Zr) multifilamentary wires. At 4.2 K, a ..mu..H /SUB c2/ of 22 T and an overall J /SUB c/ of 1 x 10/sup 4/ A/cm/sup 2/ at 17 T are obtained for these wires. At 1.8 K, overall J /SUB c/ in 15 T of these wires are twice as large as that of the bronze-processed Nb/sub 3/Sn multifilamentary wire. The enhanced J /SUB c/ at reduced temperatures may be attributed to the rapid increase in ..mu..H /SUB c2/ by using the temperature scaling law of the pinning force density. ..mu..H /SUB c2/ measured in pulsed fields is about 28 T at 2.0 K. According to the temperature scaling law, the overall J /SUB c/ for 1.8 K and at 20 T is estimated to be 2 x 10/sup 4/ A/cm/sup 2/. Thus, the present V/sup 2/(Hf,Zr) multifilamentary wires are very promising for use of generating high magnetic fields in the superfluid liquid helium environment.

• Research Organization: National Research Institute for Metals, Sakuramura, Niiharigun, Ibaraki
• OSTI ID: 6485502
• Report Number(s): CONF-840937-
• Journal Information: IEEE Trans. Magn.; (United States), Vol. MAG-21:2; Conference: Applied superconductivity conference, San Diego, CA, USA, 9 Sep 1984
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERCONDUCTING WIRES
CRITICAL FIELD
CURRENT DENSITY
CRITICAL CURRENT
HAFNIUM ALLOYS
NIOBIUM ALLOYS
SCALING LAWS
TEMPERATURE DEPENDENCE
TIN ALLOYS
VANADIUM ALLOYS
ZIRCONIUM ALLOYS
ALLOYS
CURRENTS
ELECTRIC CURRENTS
MAGNETIC FIELDS
WIRES
420201* - Engineering- Cryogenic Equipment & Devices