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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 · · Journal of Superconductivity; (United States)
OSTI ID:7071528
 [1]; ; ; ; ;  [2];  [3];  [4]
  1. Universitaet Erlangen-Nuernberg (Germany) Siemens AG, Erlangen (Germany)
  2. Universitaet Erlangen-Nuernberg (Germany)
  3. CIRIL, Caen (France)
  4. Siemens AG, Erlangen (Germany)
+ Show Author Affiliations

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--
Journal Information:
Journal of Superconductivity; (United States), Journal Name: Journal of Superconductivity; (United States) Vol. 7:1; ISSN JOUSEH; ISSN 0896-1107
Country of Publication:
United States
Language:
English

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Related Subjects

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