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

Conference · Tue Feb 01 00:00:00 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-; CODEN: JOUSEH; CNN: SFB 252; TRN: 94-014491
• Journal Information: Journal of Superconductivity; (United States), Vol. 7:1; Conference: Physics and chemistry of molecular and oxide superconductors conference, Eugene, OR (United States), 27-31 Jul 1993; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
CRYSTAL DEFECTS
CRYSTAL LATTICES
TRANSITION TEMPERATURE
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
BARIUM COMPOUNDS
CERAMICS
CUPRATES
MAGNETIC FIELDS
MAGNETIC FLUX
OXIDES
PRASEODYMIUM COMPOUNDS
VORTICES
YTTRIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON MICROSCOPY
MICROSCOPY
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)
360204 - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies