Heavy ion irradiation of Bi-2223 silver-clad tapes for superconducting current density enhancement

Conference · Thu Jul 01 00:00:00 EDT 1993

OSTI ID:10175424

Malozcnoff, A P; Carter, W L; Riley, Jr, G N ^[1]; Wheeler, R IV; Kirk, M A ^[2]; Civale, L; Marwick, A D ^[3]

---

1. American Superconductor Corp., Westborough, MA (United States)
2. Argonne National Lab., IL (United States)
3. IBM Research, Yorktown, NY (United States)

Silver-clad composite tapes of Bi(Pb)SrCaCuO-2223 were irradiated with 1 GeV Au{sup 23+} ions perpendicular to the tape plane, creating columnar tracks with 10 nm diameter. Detailed transmission electron microscopy shows continuous columns, but with variations in the track thickness of +/{minus}2 nm. Magnetic hystersis measurements show substantial enhancement of superconducting current density at most temperatures and fields. Granular and nongranular models for the origin of the magnetic signals are discussed. The results indicate the potential for further performance improvement in high temperature superconducting wire technology, as well as limits in the high-field performance at 77 K.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10175424
• Report Number(s): ANL/MCT/CP-80158; CONF-930703-9; ON: DE93017416
• Resource Relation: Conference: International cryogenic materials conference (ICMC),Albuquerque, NM (United States),12-16 Jul 1993; Other Information: PBD: [1993]
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
SUPERCONDUCTING COMPOSITES
CURRENT DENSITY
BISMUTH COMPOUNDS
LEAD COMPOUNDS
STRONTIUM COMPOUNDS
CALCIUM COMPOUNDS
COPPER COMPOUNDS
OXYGEN COMPOUNDS
SILVER IONS
IRRADIATION
665412
360204
SUPERCONDUCTING DEVICES
PHYSICAL PROPERTIES