Characterization of YBa[sub 2]Cu[sub 3]O[sub 7]/PrBa[sub 2]Cu[sub 3]O[sub 7] superlattices

Conference · Mon Jan 31 23:00:00 EST 1994 · Journal of Superconductivity; (United States)

OSTI ID:7071449

Jakob, G; Hahn, T; Kluge, T; Wagner, P; Adrian, H ^[1]

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1. Technische Hochschule Darmstadt (Germany)

We investigated the structural and superconducting properties of c-axis oriented (YBa[sub 2]Cu[sub 4]O[sub 7])[sub nY/](PrBa[sub 2]Cu[sub 3]O[sub 7])[sub nPr] superlattices with thicknesses of the individual layers down to one unit cell (10 [ge] nY [ge] 1; 18 [ge] nPr [ge] 1). By transmission electron microscopy and X-ray diffraction we find an excellent structural quality of the samples, though the quantitative analysis shows the existence of defects. In superlattices with decoupled YBa[sub 2]Cu[sub 3]O[sub 7] layers of two unit cell thickness we find a high T[sub c] value of 75 K. We probed the flux line structure in the superlattices by measurements of the critical current density in magnetic fields. The experiments show that the flux-line dynamics is dominated by the movement of pancake vortices. 9 refs., 3 figs.

• OSTI ID: 7071449
• Report Number(s): CONF-930710--; CNN: SFB 252
• 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

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
BARIUM COMPOUNDS
CERAMICS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUPRATES
DIFFRACTION
ELECTRON MICROSCOPY
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MAGNETIC FLUX
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
SCATTERING
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TRANSMISSION ELECTRON MICROSCOPY
VORTICES
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS