Enhancement of flux pinning by Pr doping in Y[sub 1[minus][ital x]]Pr[sub [ital x]]Ba[sub 2]Cu[sub 3]O[sub 7[minus][delta]] (0[le][ital x][le]0. 4)

Journal Article · Sat May 01 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.47.11627· OSTI ID:6891389

Paulius, L M; Almasan, C C; Maple, M B ^[1]

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1. Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093 (United States)

Magnetic relaxation measurements in a magnetic field of 5 kOe at temperatures 5 K [le][ital T][le]90 K have been made on the system Y[sub 1[minus][ital x]]Pr[sub [ital x]]Ba[sub 2]Cu[sub 3]O[sub 7[minus][delta]] for 0[le][ital x][le]0.4. The measurements reveal two peaks in the normalized logarithmic decay of the magnetization [ital S] as a function of temperature for the full range of Pr concentrations studied. The occurrence of the second peak in [ital S] could be a reflection of the softening of the flux lattice on approaching the melting line. Both the pinning energy at 27 K and the intragranular critical current density at 10 K exhibit maxima at [ital x][approx]0.1--0.2, with values that are about twice the corresponding values at [ital x]=0.

• DOE Contract Number: FG03-86ER45230
• OSTI ID: 6891389
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 47:17; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
MAGNETIC FLUX
COPPER OXIDES
PRASEODYMIUM OXIDES
YTTRIUM OXIDES
CRITICAL CURRENT
DOPED MATERIALS
HIGH-TC SUPERCONDUCTORS
RELAXATION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CURRENTS
ELECTRIC CURRENTS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)