Critical current density, irreversibility line, and flux creep activation energy in silver-sheathed Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} superconducting tapes
- Argonne National Lab., IL (United States)
- National Inst. of Standards and Technology (NEL), Boulder, CO (United States). Electromagnetic Technology Div.
- New South Wales Univ., Kensington, NSW (Australia). School of Materials and Engineering
Transport data, magnetic hysteresis and flux creep activation energy experimental results are presented for silver-sheathed high-{Tc} Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} superconducting tapes. The 110 K superconducting phase was formed by lead doping in a Bi-Sr-Ca-Cu-0 system. The transport critical current density was measured at 4.0 K to be 0.7 {times} 10{sup 5} A/cm{sup 2} (the corresponding critical current is 74 A) at zero field and 1.6 {times} 10{sup 4} A/cm{sup 2} at 12 T for H{parallel}ab. Excellent grain alignment in the a-b plane was achieved by a short-melting method, which considerably improved the critical current density and irreversibility line. Flux creep activation energy as a function of current is obtained based on the magnetic relaxation measurements.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38; FG02-90ER45427
- OSTI ID:
- 10105977
- Report Number(s):
- ANL/CP-77533; CONF-920802-30; ON: DE93002998
- Resource Relation:
- Conference: Applied superconductivity conference,Chicago, IL (United States),23-28 Aug 1992; Other Information: PBD: Aug 1992
- Country of Publication:
- United States
- Language:
- English
Similar Records
Critical currents in silver-sheathed (Bi,Pb) sub 2 Sr sub 2 Ca sub 2 Cu sub 3 O sub 10 minus sub y superconducting tapes
Critical current density, lower critical field, and flux creep in Ag-sheathed high- J sub c tape of Bi-Pb-Sr-Ca-Cu-O
Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
HIGH-TC SUPERCONDUCTORS
BISMUTH OXIDES
STRONTIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
MAGNETIZATION
HYSTERESIS
MAGNETIC FLUX
CREEP
ACTIVATION ENERGY
360207
665412