Flux pinning in Y sub 1 minus x Pr sub x Ba sub 2 Cu sub 3 O sub 7 minus. delta. high T sub c superconductors
- Department of Physics, University of California, San Diego, La Jolla, California 92093 (USA) Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093 (USA)
- General Atomics, San Diego, California 92121 (USA)
Magnetic relaxation measurements have been made on two sets of samples of Y{sub 1{minus}{ital x}}Pr{sub {ital x}}Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} high {ital T}{sub {ital c}} superconductors with 0{le}{ital x}{le}0.10. The samples were prepared as fibers using a sol-gel process and as polycrystalline pellets using a standard solid-state reaction technique. In an applied field of 5 kOe at 30 K, the fluxoid pinning potential {ital U} was observed to increase approximately linearly with Pr concentration {ital x} at the rate {ital dU}/{ital dx}{approx}1 eV. A mechanism for the enhancement of {ital U} may be the suppression of the superconducting order parameter in the vicinity of the Pr ions due to magnetic pair breaking.
- DOE Contract Number:
- FG03-86ER45230
- OSTI ID:
- 5562659
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 58:16; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FIBERS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES