Effect of columnar defects on the J[sub c] anisotropy of YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] thin films and YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]/PrBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] multilayers

Conference · Tue Feb 01 00:00:00 EST 1994 · Journal of Superconductivity; (United States)

OSTI ID:7071528

Holzapfel, B ^[1]; Leghissa, M; Bauer, P; Kreiselmeyer, G; Kraus, M; Saemann-Ischenko, G ^[2]; Bouffard, S ^[3]; Schultz, L ^[4]

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1. Universitaet Erlangen-Nuernberg (Germany) Siemens AG, Erlangen (Germany)
2. Universitaet Erlangen-Nuernberg (Germany)
3. CIRIL, Caen (France)
4. Siemens AG, Erlangen (Germany)

Epitaxial YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] thin films (YBCO) and YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]/PrBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] multilayers (Y/Pr) were irradiated with high-energy heavy ions (770) Mev [sup 108]Pb under various directions [phi] relative to the c-axis. The irradiation resulted in columnar defects tilted by [phi] from the c-axis. The angular dependence of their pinning activity was studied by measuring the anisotropy of the critical current density. The J[sub c](B, T, [theta]) behavior of the irradiated YBCO thin films showed an additional peak, which exceeds the intrinsic pinning peak, exactly at the irradiation direction. The Y/Pr multilayers, however, showed an isotropic J[sub c]-enhancement by a factor of 5, without any additional structure in the J[sub c](B, T, [theta]) curve. 14 refs., 2 figs.

• OSTI ID: 7071528
• Report Number(s): CONF-930710-; CODEN: JOUSEH; TRN: 94-014493
• Journal Information: Journal of Superconductivity; (United States), Vol. 7:1; Conference: Physics and chemistry of molecular and oxide superconductors conference, Eugene, OR (United States), 27-31 Jul 1993; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
ANISOTROPY
CRITICAL CURRENT
CRYSTAL DEFECTS
RADIATION EFFECTS
BARIUM COMPOUNDS
CERAMICS
CUPRATES
EPITAXY
LEAD 208 BEAMS
OXIDES
PRASEODYMIUM COMPOUNDS
THIN FILMS
YTTRIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BEAMS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CURRENTS
FILMS
ION BEAMS
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360204 - Ceramics
Cermets
& Refractories- Physical Properties