Anisotropic vortex cross-flux effects in grain-oriented YBa sub 2 Cu sub 3 O sub 7

Journal Article · Wed May 01 04:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.11481· OSTI ID:5490425

Liu, L; Kouvel, J S ^[1]; Brun, T O ^[2]

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1. Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60680 (USA)
2. P-LANSCE Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA)

After cooling to 4.2 K in a field {bold H}{sub cool} parallel (or normal) to the {ital c} axis and then removing {bold H}{sub cool}, the sample was subjected to an increasing field {bold H} normal (or parallel) to {ital c} and the longitudinal and transverse magnetizations relative to {bold H} were measured simultaneously. The vortex flux produced by {bold H}{sub cool} along {ital c} persists and inhibits the creation by {bold H} of vortex flux in the {ital a}-{ital b} plane. However, the creation of the latter does not require a threshold value of {bold H}. The vortex flux produced by {bold H}{sub cool} in the {ital a}-{ital b} plane diminishes rapidly with increasing {bold H} along {ital c}, and there are essentially no cross-flux effects. Thus, these effects are largely governed by the strength of the initial flux pinning, which is highly anisotropic.

• OSTI ID: 5490425
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:13; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
GRAIN ORIENTATION
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
MICROSTRUCTURE
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES